Canada experiences up to 8,000 wildfires per year, producing vast amounts of smoke that can travel hundreds of kilometers, affecting millions. Forest fire pollution includes particulate matter (PM2.5), carbon monoxide, atmospheric mercury, ozone-forming chemicals, and volatile organic compounds. Wildfire smoke, a mix of PM2.5 and gases, poses severe health risks, obstructing oxygen intake, irritating the respiratory system, and causing inflammation. Symptoms include eye irritation, coughing, and headaches; severe cases require medical attention for breathlessness or chest pain. PM2.5 particles are particularly concerning as they penetrate deep into the lungs, increasing mortality risk and exacerbating respiratory and cardiovascular diseases. Source: www.bccdc.ca/health-info/prevention-public-health/wildfire-smoke