CO Awareness week kicks off Wednesday, November 1.
Carbon monoxide is called a silent killer because it is a colorless, odorless, and tasteless gas that is slightly less dense than air.
Sarnia Fire Public Education Officer Mike Otis says it's the law to have CO alarms outside sleeping areas in your home.
"I think one of the biggest things we're up against in complacency, people think--oh what are the chances, but we were at a call yesterday and another the day before," says Otis. 'We go to hundreds of calls a year and it's the leading cause of accidental poising deaths in North America, 500 people a year die from it."
If Sarnia Fire and Rescue Services respond to your home on another matter and discover you don't have an alarm properly installed, you could be fined $360.