AdvertisementMontana Wildfires Provide A Wealth Of Data On Health Effects Of Smoke ExposurePlay03:53Download AudioFebruary 24, 2018Nora SaksfacebookEmailWildfire smoke filled the sky in Seeley Lake, Mont. on Aug. 7, 2017. Weather effects concentrated the accumulating smoke, chronically exposing residents to harmful substances in the air. (InciWeb)