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carbon monoxide (CO)

Pronunciation:   kar-bon mon-oks-Id
   
Definition : A colorless, odorless, but poisonous, combustible gas with the formula CO.
   
Facts: Carbon monoxide is produced in the incomplete combustion of carbon and carbon compunds such as fossil fuels (ex., coal, petroleum) and their products (ex., liquified petroleum gas, gasoline) and biomass.

Carbon monoxide binds with hemoglobin in red blood cells taking the place where oxygen usually binds to the blood cells.