Carbon Monoxide (CO) – a non-irritating (won’t make you cough), colorless, tasteless, and odorless gas.
Source: rich combustion - too little air or too much gasoline
*Other sources: cigarette smoke or faulty household furnaces*
CO is POISIONOUS because it reduces the ability of blood to bring oxygen to the body’s cells and tissues.
Remember that oxygen is needed for the combustion that gives our bodies energy.