Annual Probability of Carbon Monoxide Poisoning

Carbon monoxide (CO) poisoning causes approximately 430 non-fire-related deaths and 100,000 emergency room visits in the United States each year. CO is an odorless, colorless gas produced by burning fuel (gas, oil, coal, wood), making it particularly dangerous because it cannot be detected without a CO alarm.

The most common sources of CO poisoning include malfunctioning furnaces and heating systems, generators operated indoors or in enclosed spaces (a particular risk during power outages), car engines running in enclosed garages, blocked chimneys and vents, and charcoal grills or camp stoves used indoors. CO poisoning peaks during winter months, when heating systems are in heavy use, and after major storms when people use portable generators.

Symptoms of CO poisoning include headache, dizziness, nausea, confusion, and loss of consciousness. Because symptoms mimic the flu, CO poisoning is frequently misdiagnosed. Prevention is straightforward: install CO detectors on every floor of your home (especially near bedrooms), have heating systems inspected annually, never run generators or fuel-burning equipment indoors, and ensure adequate ventilation when using any fuel-burning device. CO detectors cost as little as $20 and are required by law in most states.