Wildfire Smoke Contaminated by Contaminants
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Wildfire smoke can carry toxins hundreds of kilometers, depositing 'urban grime'

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Canada 's 2023 wildfire season was the most destructive ever recorded, with an estimated 18.5 million hectares burned.
The frequency and severity of wildfires is expected to continue increasing due to climate change.
Wildfire smoke features a complex mixture of pollutants, including polycyclic aromatic hydrocarbons (PAHs) PAHs are produced whenever incomplete combustion occurs.