Carbon monoxide (CO) is often called the "silent killer" because it is a colorless, odorless, and tasteless gas that can be deadly even at low levels over time. It is produced when fuels such as gas, wood, coal, or oil are burned incompletely.

Carbon monoxide (CO) is often called the “silent killer” because it is colorless, odorless, and tasteless. Even small amounts can be dangerous, and prolonged exposure to elevated levels can be fatal. This makes carbon monoxide alarms essential for every home.

Carbon monoxide (CO) is often referred to as the "silent killer" — a deadly gas that is colorless, odorless, and tasteless. Because it is impossible to detect without specialized equipment, CO poisoning can happen without warning, making it a serious safety concern for every household. Fortunately, carbon monoxide alarms​ provide an effective first line of defense, alerting you before dangerous levels can harm your family.