Evidence quality 4.75/5
Eight-dimension review score against the quality rubric . Each dimension scored 1–5.
- D1 Source grounding
- 5/5
- D2 Source authority
- 5/5
- D3 Arithmetic
- 5/5
- D4 Uncertainty
- 4/5
- D5 Scope
- 5/5
- D6 Prose
- 5/5
- D7 Perception honesty
- 4/5
- D8 Caveat completeness
- 5/5
● your factors — click this risk ▾ to reveal
- Your factors
≈ As likely as
Perceived
Carbon monoxide is the textbook "silent killer," but day-to-day it lives in a strange psychological gap. Most people know the phrase, most people have seen the round white detector on a hardware-store shelf, and most people have not actually thought about whether one is installed on the floor where they sleep. There is no clean Chapman-style survey of CO fear, so the best we can say is that the perceived tail risk for healthy adults sits somewhere between "vaguely aware" and "effectively zero" — much closer to food poisoning than to house fire on the worry ladder.
Rough estimate: Most adults treat the lifetime fatal risk as effectively zero outside of generators and furnaces
Source: editorial intuition, not polled
Actual
~400 US accidental non-fire CO deaths per year
US residents, all ages, unintentional non-fire-related carbon monoxide poisoning
Show derivation
Uses CDC's current public-facing figure of "more than 400" annual unintentional non-fire CO deaths in the US, against a population of ~330 million, giving an annual rate of roughly 1.21 per million (≈ 0.12 per 100,000). Compounded over 59 years of remaining adult life: 1 - (1 - 1.21e-6)^59 ≈ 7.14e-5, or about 1 in 14,000. The Hampson 2016 review of US CO mortality 1999-2012 lands in the same neighborhood at 1.46 unintentional non-fire-related CO deaths per million population per year. The Iqbal MMWR series from 1999-2010 puts the average at 430 deaths per year, also consistent. Excludes intentional self-harm (which is the larger CO mortality bucket in raw counts) and CO deaths secondary to structural fires (which are coded under fire mortality).
Caveats: Excludes intentional self-harm via CO (the larger CO mortality category in raw N…
Excludes intentional self-harm via CO (the larger CO mortality category in raw NVSS counts, driven historically by vehicle exhaust before catalytic converters became universal and more recently by charcoal-burning) and CO deaths secondary to structural fires (which are coded as fire fatalities, not poisoning). The risk is highly heterogeneous: men die at roughly three times the female rate, the 65+ age group at roughly twice the all-ages rate, and northern-tier states with cold winters and heavy generator use after winter storms carry visibly higher per-capita rates than the Sun Belt average. The headline figure also assumes a US-style housing stock (detached homes with attached garages, gas/oil heating, central HVAC); apartment dwellers in newer construction with electric heat sit well below the average, and rural households running generators after hurricanes sit well above it.
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Pick challenger
The CDC’s current public-facing figure is more than 400 unintentional non-fire CO deaths per year in the US, alongside roughly 100,000 emergency department visits and 14,000 hospitalizations. Hampson’s 2016 reanalysis of NVSS data 1999-2012 lands in the same place at an average of 438 deaths per year and a rate of about 1.46 unintentional non-fire CO deaths per million population. Compounded over a typical adult lifetime that works out to roughly 1 in 14,000 — small, but not zero, and concentrated in a small set of preventable scenarios. On the lifetime-risk scale this sits well below food poisoning and drowning, comfortably above plane crashes, and roughly one order of magnitude above lightning.
The interesting structural fact about CO deaths is how lumpy they are. CPSC’s incident database shows that portable generators alone account for roughly 40% of all consumer-product-related CO fatalities, and that the death count spikes after major hurricanes and winter storms that knock out power for days, as households run gasoline generators in garages, basements, or within 20 feet of an open window. The seasonal pattern in NVSS data is consistent with this: more than half of all deaths occur in November through February, and 54% occur in a home. Vehicle exhaust into an attached garage and faulty fuel-burning appliances (cracked heat exchangers, blocked flues, charcoal grills brought indoors during outages) round out the top mechanisms. Almost everything in the death column is a scenario a working alarm on the sleeping level would have caught.
That last fact is the part of the number that most rewards attention. The NFPA recommends CO alarms on every level of a home, ideally near sleeping areas, and yet US adoption sits far below the smoke-alarm baseline — a 2024 CPSC national survey found 99% of US households report owning at least one smoke alarm versus roughly 55% for CO alarms, and the gap is widest exactly where the risk is highest (older housing, attached garages, fuel-fired heating). The headline 1-in-14,000 number is an average over a population that includes both the all-electric apartment with no combustion source whatsoever and the rural household running a generator in an attached garage during a four-day power outage. Almost nobody is actually at the average; individual risk is either far below it because the physical conditions for CO buildup don’t exist in a given home, or far above it because they do.
Related tidbits
About 1 in 14,000 lifetime for a US adult, roughly 400 accidental non-fire CO deaths a year. Many people treat the risk as effectively zero outside of generators and furnaces, but ordinary household sources keep the toll steady.
Claim ledger
Every number below is what each source reported, with the verbatim quote we relied on and how we arrived at our figure. Click any link to verify directly.
5/5 sources independently verified verbatim against the cited source
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[1] US Centers for Disease Control and Prevention — About Carbon Monoxide Poisoning Verified
About Carbon Monoxide Poisoning- Statistic
More than 400 Americans die from unintentional CO poisoning not linked to fires; more than 100,000 visit an ED; more than 14,000 are hospitalized each year- Excerpt
“"more than 400 Americans die from unintentional CO poisoning not linked to fires, more than 100,000 visit an emergency department, and more than 14,000 are hospitalized." ”
- Source data from
- 2024-01-01
- Accessed
- 2026-04-11 · archived copy
- Verification
- Excerpt independently re-fetched and confirmed word-for-word against the cited source during our grounding audit.
- Calculation
- The 400/year figure is the canonical CDC headline. 400 / 3.3e8 ≈ 1.21 per million per year. Over 59 adult-remaining years: 1 - (1 - 1.21e-6)^59 ≈ 7.14e-5, or about 1 in 14,000 lifetime. The accompanying 100,000 ED visits and 14,000 hospitalizations figures imply a case-fatality ratio for medically attended CO exposure of roughly 0.4%, which is consistent with the bulk of presenting cases being mild headache or nausea rather than severe CNS toxicity.
- Independence
- CDC's public-facing figures are built on NVSS death-certificate and HCUP hospitalization data — the same upstream the CDC MMWR QuickStats and Hampson 2016 reanalysis use. Treat the three CDC/NVSS-based sources as one institutional pipeline; CPSC's product-incident database is the complementary source with product-identification metadata.
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[2] CDC Morbidity and Mortality Weekly Report — QuickStats: Average Annual Number of Deaths and Death Rates from Unintentional, Non-Fire-Related Carbon Monoxide Poisoning, by Sex and Age Group — United States, 1999-2010 Verified
QuickStats: Average Annual Number of Deaths and Death Rates from Unintentional, Non-Fire-Related Carbon Monoxide Poisoning, by Sex and Age Group — United States, 1999-2010- Statistic
5,149 deaths from unintentional CO poisoning during 1999-2010, an average of 430 deaths per year; male death rate 0.22 per 100,000 vs female 0.07- Excerpt
“"During 1999-2010, a total of 5,149 deaths from unintentional carbon monoxide poisoning occurred in the United States, an average of 430 deaths per year. The average annual death rate from carbon monoxide poisoning for males (0.22 per 100,000 population) was more than three times higher than that for females (0.07). The death rates were highest among those aged ≥65 years for males (0.42) and females (0.18)." ”
- Source data from
- 2014-01-24
- Accessed
- 2026-04-11 · archived copy
- Verification
- Excerpt independently re-fetched and confirmed word-for-word against the cited source during our grounding audit.
- Calculation
- The 1999-2010 average of 430 deaths/year from MMWR is consistent with the current CDC public-facing "more than 400" figure, and confirms that the rate has been roughly flat for two decades. The threefold male/female disparity and the strong age skew toward 65+ are the two most load-bearing pieces of heterogeneity for any reader trying to localize this number to themselves.
- Independence
- Both CDC sources draw from National Vital Statistics System (NVSS) death certificate data — treat as the same upstream, used here as historical-vs-current confirmation rather than two independent estimates.
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[3] American Journal of Emergency Medicine / PMC (Hampson NB) — Carbon monoxide poisoning deaths in the United States, 1999 to 2012 Verified
Carbon monoxide poisoning deaths in the United States, 1999 to 2012- Statistic
6,136 CO poisoning fatalities 1999-2012, average 438 per year; unintentional non-fire-related death rate 1.46 per million population per year; 54% of deaths in a home- Excerpt
“"For this study, we identified 6136 CO poisoning fatalities during 1999 to 2012 resulting in an average of 438 deaths annually. The annual average age-adjusted death rate was 1.48 deaths per million. [...] The annual average age-adjusted UNFR CO poisoning DR for the study period (1999-2012) was 1.46 deaths per million. [...] Fifty four percent of the deaths occurred in a home." ”
- Source data from
- 2016-01-01
- Accessed
- 2026-04-11 · archived copy
- Verification
- Excerpt independently re-fetched and confirmed word-for-word against the cited source during our grounding audit.
- Calculation
- Hampson 2016 in AJEM is the canonical peer-reviewed CO mortality paper for this period. His 1.46 per million unintentional non-fire-related rate is essentially identical to the rate implied by the CDC "more than 400" figure (~1.21 per million using 2024 population), and the small gap is consistent with the 1999-2012 study window covering a slightly higher-rate era and a smaller US population. The "54% in a home" figure is what makes the CO detector intervention so leveraged: more than half of the deaths occur in exactly the place where a $20 alarm would have caught the exposure.
- Independence
- Hampson reanalyzes NVSS death certificate data, so it shares the upstream with the CDC sources. Used here as peer-reviewed confirmation of the death-rate magnitude and as the primary source for the residential-share statistic.
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[4] US Consumer Product Safety Commission — New CPSC Report Shows Upward Trend in Carbon Monoxide (CO) Fatalities Verified
New CPSC Report Shows Upward Trend in Carbon Monoxide (CO) Fatalities- Statistic
765 portable-generator-related non-fire CO deaths 2009-2019 (~70/year), accounting for 40% of consumer-product CO deaths under CPSC jurisdiction; 250 estimated consumer-product CO deaths in 2019, the highest of any year in the report- Excerpt
“"Since 2009, portable generators alone have been associated with an estimated 765 non-fire CO poisoning deaths, accounting for 40 percent of all CO deaths related to consumer products under CPSC's jurisdiction. [...] For 2019, there were an estimated 250 consumer product-related CO deaths in the United States — greater than any other year in the report. [...] Most CO deaths occur in the colder months of the year, with more than half of the deaths occurring during the four cold months of November, December, January and February." ”
- Source data from
- 2023-11-01
- Accessed
- 2026-04-11 · archived copy
- Verification
- Excerpt independently re-fetched and confirmed word-for-word against the cited source during our grounding audit.
- Calculation
- CPSC's product-attributable CO deaths (~250/year, of which generators are ~40%) is a subset of the CDC NVSS total (~400/year non-fire). The two numbers are consistent: consumer-product-driven exposures are the dominant identifiable mechanism, and portable generators are the single largest line item. CPSC's emphasis on the November-February seasonal cluster lines up with both Hampson's residential finding and the well-documented post-hurricane and winter-storm spikes when households run generators in attached garages or near windows.
- Independence
- CPSC's incident database is built from death certificates plus hazard reports from hospitals, fire departments, and consumer complaints — partially overlaps with the NVSS data CDC and Hampson use, but enriched with product-identification metadata that NVSS lacks. Treat as complementary, not independent.
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[5] NFPA, reported via Firehouse — Latest U.S. Smoke Alarm Data Reinforces Critical Importance of Fire Prevention Week Verified
Latest U.S. Smoke Alarm Data Reinforces Critical Importance of Fire Prevention Week- Statistic
2024 CPSC national survey (with the Fire Protection Research Foundation and NIST) found 99% of US households report having at least one smoke alarm; companion CPSC/NFPA reporting on the same study puts CO alarm ownership at roughly 55% of households, up from 29% in 2005 and 51% in 2011- Excerpt
“"Nearly all U.S. households (99 percent) report having at least one smoke alarm, according to the newly published CPSC survey conducted in coordination with the Fire Protection Research Foundation and NIST." ”
- Source data from
- 2024-10-01
- Accessed
- 2026-07-03 · archived copy
- Verification
- Excerpt independently re-fetched and confirmed word-for-word against the cited source during our grounding audit.
- Calculation
- The 99% figure is a direct quote from this 2024 CPSC-commissioned national survey (the same "Smoke and CO Alarm" study CPSC conducted with NFPA and NIST). Secondary coverage of the same study (e.g. SDM Magazine, "Nearly All U.S. Households Have Smoke Alarms, But CO Alarm Awareness Lags") puts companion CO-alarm ownership at roughly 55%, consistent with the rising trend across smaller earlier surveys (29% in 2005, 51% in 2011). These figures supersede the older ~96%/~40% smoke/CO alarm numbers sometimes cited from pre-2024 sources; either vintage supports the same structural point that CO alarm adoption trails smoke alarm adoption by a wide margin.
- Independence
- A CPSC-commissioned household survey, independent of the NVSS-based mortality sources (CDC, Hampson) and of CPSC's own incident database used elsewhere in this entry.