Infographic: Carbon monoxide

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Organization: Health Canada
Published: 2025
Carbon Monoxide (CO)
Carbon monoxide is a gas produced when you burn any type of fuel
Who is at risk?
Anyone is at risk
Typical sources of carbon monoxide include items like:
- Heating appliances (such as a furnace)
- Fireplaces/wood and pellet stoves
- Fuel-powered vehicles
- Cooking and household appliances (gas stove, gas dryer)
- Camping stoves and barbecues
- Fuel-powered generators
- Fuel-powered equipment (lawnmower, snowblower)
- Cigarettes
Carbon monoxide has:
- NO smell
- NO taste
- NO colour
CO poisoning can cause:
- Mild Effects
- Tiredness
- Headaches
- Shortness of breath
- Severe effects
- Loss of consciousness
- Coma
- Death
To prevent CO poisoning:
- Install a certified CO alarm near bedrooms
- Clean your chimney
- Maintain stoves/fireplaces and have your furnace checked annually
- Never idle vehicles or run fuel-powered equipment in the garage
During a power outage
- Never use a fuel-powered generator indoors or in your garage or shed. Operate it at least 6 meters (20 feet) from any home or building
- Never use a barbecue, camping stove or fuel-burning equipment in your home, garage or shed
If your CO alarm sounds
- Leave the building immediately
- Call 9-1-1
- Do not re-enter
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