Carbon monoxide (CO) is a colorless, odorless and tasteless gas. It’s produced by partial fuel combustion often caused by a lack of oxygen. In your house, appliances that use natural gas, charcoal, wood or kerosene are vulnerable. Especially if they are not running accurately or have been installed incorrectly.
Vehicle exhaust fumes from nearby garages, as well as poorly operating fireplaces could also create carbon monoxide. CO is toxic to the body and is deadly at increased levels or with prolonged exposure.