Experts warn that flavored e cigarettes can cause irreversible lung damage, as seen in a U.S. teenager who developed popcorn lunga severe and permanent condition called bronchiolitis Doctors Discover New Lung Injury Related To Vaping Known As 'Popcorn Lung' CBS Philadelphia Vape Mythbusting: Debunking 7 Common Myths Can vaping damage your lungs? What we do (and don't) know Harvard Health Does Vaping Cause Lung Cancer?