Forest fires are a natural and required part of the Canadian ecosystem. Hell, the most common natural tree in Canada – Black Spruce – usually can't germinate successfully without a forest fire, and some of Canada's other most common tree species strictly need fire to germinate. That is, their seeds won't germinate at all unless there is a fire. Jack Pine is such an example and it's about the third most common by number. Not just small forest fires either: Jack Pine requires massive, destructive, hot, forest fires as it only germinates when the competition has been killed off.

Suck it up. Bad air quality due to forest fires is natural and healthy (for the forests).