About 900 of these deaths occur in homes. Most of the deaths could be prevented if people were more aware of the dangers.
Carbon monoxide is a colorless, tasteless, odorless gas that is slightly lighter than air.
Only small insignificant amounts of CO are produced by normal combustion. However, incomplete combustion of any fuel greatly increases the production of poisonous carbon monoxide. Even normally safe, fuel-burning furnaces can present a danger if not cared for properly. Fuel-burning appliance systems should be kept in good repair and checked at least annually. Especially prior to the heating season, ake sure that the chimney is not blocked by birdnests, leaves, soot, loose mortar, bricks or trash.