Carbon monoxide (CO) is a clear gas that you cannot smell. It is produced when any organic substance (for example, wood, fuel, coal) does not burn completely. 

First aid

• If someone has collapsed and is not breathing, call 000.
• If you think someone has carbon monoxide poisoning, call the Poisons Information Centre on 13 11 26.

Symptoms of carbon monoxide poisoning

• Headache, dizziness or feeling faint and weak
• Nausea or vomiting
• Extended exposures can cause seizures, coma, permanent brain injury or in serious cases, death.

Learn more about CO poisoning.

Sources of carbon monoxide

• Barbecue grills
• Outdoor heaters
• Bonfires and fire pits
• Car, boat or generator exhausts
• Gas heaters if they are connected to the wrong source.

How carbon monoxide poisoning occurs

Poisoning occurs most often when outside heating and cooking items are brought inside to an enclosed area.

When there is not enough air to burn the substance cleanly, carbon monoxide is produced and inhalation can cause poisoning.

This often happens at night when using inexpensive heating inside camping or temporary accomodation.

Poisoning also occurs when cars, boats or generators, especially diesel ones, are left running in an enclosed space.

How to prevent carbon monoxide poisoning

• Ensure outdoor BBQs and heaters are used in an open area outside.
• Only use approved indoor heaters inside for warmth and have these serviced at least every 2 years by a registered gas fitter. This will ensure emission levels are safe.
• Leave coals from BBQs, heaters and bonfires outside. They can produce CO even if there is no smoke.
• If using a generator, make sure it's outlet is positioned away from the house.
• Do not leave a car running in a garage or car park even if the garage door is open.