E Cigarettes at the Point of Sale Counter Tobacco What Chemicals Does Vaping Cause Popcorn Lung? : R Vaping Is Popcorn Lung Irreversible Popcorn lung: What is it, and who is at risk? Harvard Health Popcorn lung: What is it, and who is at risk? Harvard Health Popcorn lung: Causes, symptoms, and treatment Experts say that flavored e cigarettes can 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,