Carbon Monoxide is the most toxic gas known to man as it hospitalizes the most people every year than any other toxic gas. This colorless, odorless, and tasteless gas is a silent killer, often resulting from incomplete combustion in fuel-burning appliances like furnaces, water heaters and combustion engines. The only way to protect yourself is to ensure you have a functioning carbon monoxide detector or employ a carbon monoxide meter for spot-checking and monitoring. Carbon monoxide detectors and CO meters are used for personal protection, camping, RV, cars, aircraft, inspectors, boiler rooms, EMS, marine and boating, ice fishing, biogas, landfill, scuba, combustion, exhaust, food packaging, and indoor protection. See our YouTube Playlist of our Carbon Monoxide Detectors And Meters.