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 Diacetyl & Popcorn Lung EDGE Vaping Popcorn Lung From Vaping Debunked Canadian Teen With Popcorn Lung Like Vaping Illness May Never Recover Business Insider Australia Does Diacetyl It's a Fact. Vaping Can Cause Popcorn Lung Poster ToucanEd