Homeowners know the saying, "water finds a way." Add wildfire smoke to that distinction, another savvy invader harming indoor quality, where people should feel protected from it.

The air quality in Minnesota is improving following a week of lingering wildfire smoke, though wildfires in Canada are still burning. Jeff Wagner spoke to an HVAC technician about how to keep smoke out of a home.

Smoke from Canadian wildfires has sent a blanket of smoke over the midwestern United States this weekend. The National Weather Service (NWS) has issued air quality alerts for Minnesota and Wisconsin, as well as, Iowa, Illinois Michigan, and parts of Nebraska and Missouri.