When fuels such as wood, composites, and furniture burn incompletely, carbon monoxide (CO) is dispersed into the surrounding atmosphere, posing significant risks to firefighters attempting to extinguish fires in a dwelling or structure.
Law enforcement officers spend much of their time inside their patrol vehicles. If there are cracks in the exhaust manifold of this vehicle, an officer could be exposed to high levels of CO.
Truck engines can produce high concentrations of carbon monoxide (CO) quickly, overcoming exposed drivers before they realize they are at risk. In fact, the Centers for Disease Control (CDC) notes that CO concentrations reach the Immediately Dangerous to Life and Health (IDLH) concentration in 7 minutes when a 5-horsepower gasoline engine is operated in a 10,000 cubic foot room.