b'COMBUSTION POLLUTANTS/CARBON MONOXIDEFuel burning heating systems, cook stoves, and other appliances, as well as vehicles found in garages, generate combustion pollutants that can contaminate indoor air. A particularly dangerous combustion pollutant is carbon monoxide. Carbon monoxide is an odorless, tasteless gas that causes headaches and fatigue and can be fatal at very high levels. Ongoing research shows that combustion pollutants are related to many negative health effects, including cardiovascular and respiratory diseases.CARBON MONOXIDE (EXCLUDING FIRES) KILLS 430 PEOPLE IN THE U.S. PER YEAR.FINE PARTICULATES FROM COMBUSTION CAN ENTER LUNGS AND CAUSE RESPIRATORY PROBLEMS SUCH AS COUGHING AND WHEEZING. THOUSANDS OF OLDER ADULTS DIE PREMATURELY EACH YEAR BECAUSE OF EXPOSURE TO FINE PARTICLES.'