Carbon monoxide (CO) is a colorless, odorless and tasteless gas. It’s produced by incomplete fuel combustion frequently caused by not enough oxygen. In your residence, appliances that rely on natural gas, charcoal, wood or kerosene are susceptible. Especially if they are not working correctly or have been installed incorrectly.
Vehicle exhaust fumes from nearby garages, as well as malfunctioning fireplaces may also produce carbon monoxide. CO is toxic to the body and is deadly at heightened levels or with prolonged exposure.