Carbon monoxide (CO) is a clear, odorless and tasteless gas. It’s produced by insufficient fuel combustion usually caused by not enough oxygen. In your home, appliances that consume natural gas, charcoal, wood or kerosene are vulnerable. Especially if they are not running accurately or have been installed incorrectly.
Vehicle exhaust fumes from neighboring garages, as well as poorly operating fireplaces could also produce carbon monoxide. CO is dangerous to the body and is deadly at high levels or with prolonged exposure.