Devices and smart home
CO
Abbreviation for carbon monoxide
In short and in plain language
CO is the short name for carbon monoxide.
It is a poisonous gas. You cannot see it or smell it.
It forms when something does not burn fully. This can happen in stoves or heating, for example.
An alarm for this gas warns you with a loud tone.
Definition
CO is the chemical shorthand for carbon monoxide, a poisonous gas that you can neither see nor smell. It forms when something burns incompletely, for example in stoves or heating systems. A CO alarm sounds a loud tone when the gas builds up in the room air.