Dangerous smoke from hundreds of Canadian wildfires has seeped down to the U.S., impacting over 100 million Americans across more than a dozen states.  ABC New

Dangerous smoke from hundreds of Canadian wildfires has seeped down to the U.S., impacting over 100 million Americans across more than a dozen states.  ABC News’ Youri Benadjaoud recommends wearing an N95 mask to help protect yourself from the harmful effects of smoke exposure. [▻](https://video.…