7 Signs Of A Carbon Monoxide Leak Protect Your Home from Carbon Monoxide Leaks: Essential Safety Tips Carbon monoxide (CO) is a colorless, odorless, and tasteless gas often referred to as the “silent killer.” Produced by the incomplete combustion of solid, liquid, and gaseous fuels, CO can be emitted by appliances fueled with oil, natural gas, coal, wood, or propane. Everyday activities like burning charcoal or running non-electric machines (cars or lawn mowers) can also release carbon monoxide into your home. When heating equipment and appliances are properly ventilated, small amounts of CO are [...]