Man sleeping on sofa in front of a wood burning stove at home

Carbon monoxide (CO) is a colourless, odourless, tasteless, poisonous gas produced by incomplete burning of carbon-based fuels, including gas, oil, wood, and coal. Carbon-based fuels are safe to use. It is only when the fuel does not burn properly that excess CO is produced, which is poisonous.

You can’t see it. You can’t taste it. You can’t smell it, but carbon monoxide can kill without warning in just a few hours.

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