Carbon Monoxide Awareness Image Body ContentInstall working carbon monoxide alarms beside ALL sleeping areas. What you cannot see, smell, or taste CAN KILL YOU! Install working carbon monoxide alarms beside all sleeping areas. Test alarms monthly. Consider using alarms that have a worry-free 10 year lithium battery. Never use propane heaters inside the home or garage. Never cook with barbecues or propane cookers inside the home or garage. Never warm a vehicle in the garage. What is carbon monoxide (CO)?Carbon monoxide, or “CO,” is an odourless, colourless, poisonous gas Sources of Carbon MonoxideMany Ontario households have, on average, 4 – 6 fuel-burning appliances that produce carbon monoxide, this includes: furnace BBQ stove water heater dryer stove fuel fired fireplace blocked vents or chimney portable fuel fired generator vehicle running in attached garage Testing CO AlarmsTest CO alarms monthly or in accordance with the manufacturer’s instructions.BatteriesReplace alarm batteries at least once a year or whenever the low-battery warning sounds. Never wait. Know the difference between a low-battery warning and an emergency alarm – consult the CO alarm manufacturer’s instructions. Replace CO alarmsReplace alarms in accordance with the manufacturer’s instructions. Signs and Symptoms of Carbon Monoxide poisoning may includeDull headache Weakness Dizziness Nausea or vomiting Shortness of breath Confusion Blurred vision Loss of consciousness or death