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What is Carbon Monoxide (CO)? Carbon monoxide (CO) is a colorless, odorless, and tasteless gas produced by incomplete combustion of fuels like natural gas, gasoline, coal, and wood. It is highly toxic.
Sources:
Automobiles: Vehicle exhaust.
Heating Systems: Faulty furnaces and stoves.
Industrial Processes: Emissions from steel manufacturing.
Tobacco Smoke: Emitted from cigarettes.