Carbon monoxide (CO) is a clear, odorless and tasteless gas. It’s created by insufficient fuel combustion usually caused by a lack of oxygen. In your home, appliances that need natural gas, charcoal, wood or kerosene are susceptible. Especially if they are not running properly or have been installed wrong.
Vehicle exhaust fumes from attached garages, as well as poorly operating fireplaces can also be a carbon monoxide source. CO is toxic to the body and is lethal at heightened levels or with extended exposure.