Medical professionals are warning about bronchiolitis obliterans, commonly called "popcorn lung," a serious and permanent lung condition increasingly associated with vaping. The condition damages the smallest airways in the lungs, causing symptoms Vaping is officially deadly. A life altering diagnosis of 'popcorn lung' in a U.S. teenager is sounding the alarm on the hidden dangers of flavored e cigarettes. A U.S. teenager's secret three year vaping habit Understanding Popcorn Lung: Risks of Vaping Lungs After Smoking: Understanding Popcorn Lung from Vaping