VIDEO: According to the National Fire Protection Association, firefighters are 9 percent more likely to be diagnosed with cancer than the average American.
The Toledo Fire and Rescue department is teaming up with Cancer Dogs, a Canadian company that uses dogs to detect possible cancer in someone's breath.
Cancer Dogs is currently running screening trials all across the U.S. More than 100 fire departments have taken part in the screenings. The goal is to detect cancer early.
Here is how it works: you put on a surgical mask and breathe into it for 10 minutes. The mask is then put into a bag and shipped off to a lab in Nova Scotia. Specially trained dogs then sniff the samples and determine if they believe cancer is present.