Asthma and Wildfire Smoke 2021

Wildfires are most common during hot, dry, summer months but can occur at any time. This year, many Canadians have been affected by wildfires.

Smoke from forest fires can travel long distances and affect people far away from the fire source. Even for people without asthma, smoke and airborne particles from burning trees can irritate the eyes and airways. In people with asthma, these can worsen symptoms and cause potentially life-threatening asthma attacks.


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