Carbon Monoxide Can Be Deadly

Carbon Monoxide Can Be Deadly

Carbon monoxide (CO) is a colourless, odourless gas that can cause serious illness or death. Over 65% of all carbon monoxide deaths and injuries in Ontario occur in homes.

Where Is the Risk?

Many homes have several fuel-burning appliances that can produce carbon monoxide if they are not properly installed, ventilated, or maintained.

• CO is invisible — you cannot see, smell, or taste it.
• Exposure can happen quickly or build up over time.

• Furnace
• Gas or wood fireplace
• Gas stove or oven
• Gas water heater

• Gas dryer
• Portable fuel-fired generators
• Portable fuel heaters
• Vehicles or equipment running in attached garages

Symptoms of Carbon Monoxide Poisoning

Symptoms can appear suddenly or gradually and may be mistaken for the flu:

• Headache and dizziness
• Nausea or vomiting
• Shortness of breath
• Weakness, confusion, or collapse
• Loss of consciousness

If these symptoms occur and your CO alarm is sounding, get outside immediately and call 9-1-1.

To find a registered contractor for fuel-burning appliance inspection, visit COSafety.ca.

For more information about carbon monoxide safety, visit the Office of the Fire Marshal and Emergency Management at ontario.ca/firemarshal.

You can also contact your local fire department for advice or assistance.