Vape Mythbusting: Debunking 7 Common Myths Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association Doctors Say Vaping May Be Causing 'Popcorn Lung' A recent case involving a U.S. teenager who developed Bronchiolitis Obliterans, commonly called popcorn lung, after three years of secretly vaping has raised serious concerns about the risks of e cigarettes. This irreversible E Cigarettes Vaping with Juul & Other Electronic Cigarettes