Carbon Monoxide Poisoning: MedlinePlus

Carbon Monoxide Poisoning: MedlinePlus

Carbon Monoxide: the Invisible Killer

If you're using a furnace to stay warm this winter, make sure you know the signs of carbon monoxide poisoning. Carbon monoxide (CO) is a colorless, odorless gas. It is found in combustion fumes, like those made in heating systems, and can build up if there is a lack of air flow. Stay safe by getting your heating system inspected and installing a CO detector.