One person was reported unconscious and two others were experiencing nausea and dizziness at a home in Saskatoon where a carbon monoxide alarm went off.

The Quebec coroner's office found a car had been left running in the couple's garage, which led to the carbon monoxide poisoning.

Police say the case was not criminal and was transferred to the Quebec coroner to investigate.

'It's a stupidly dramatic story but I'm feeling very fortunate,' Anna Faris said.

A Winnipeg hotel where 46 people ended up ill and sent to hospital due to carbon monoxide poisoning had no detectors installed, according to a review into the incident.

First responders called to the home on Phoenix Crescent on Tuesday morning said parts of the home had carbon monoxide readings between 600 and 700 parts per million.

Here are the regulations in place across the country regarding CO alarms in hotels and motels.

The youth were cousins and their families said they were the best of friends.

Here is a primer on carbon monoxide poisoning and how to protect yourself.

"The recommendations were already known," said report co-author Maxime Roy.