Lungs After Smoking: Understanding Popcorn Lung from Vaping Popcorn lung" is the nickname for bronchiolitis obliterans. It is a condition that damages your lungs' smallest airways and makes you cough and feel short of breath. It's sometimes caused by breathing Does Vaping Cause Popcorn Lung? The Facts Explained Experts show that flavored e cigarettes 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, the