Does Vaping Cause Lung Cancer? What We Know (and Still Don't) Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association Vaping and Popcorn Lung Medicine.com Popcorn lung: how vaping could scar your lungs for life Experts show that flavored e cigarettes cause irreversible lung damage. A U.S. teen developed "popcorn lung" after secretly vaping for 3 years a permanent, life altering disease. Officially known as bronchiolitis obliterans, the