Ecigs, Water Vapour and The Lungs: Should You Be Concerned? E Cigarette Direct Experts say that flavored e cigarettes can 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, Does Vaping Cause Lung Cancer? What We Know (and Still Don't) Did you know vaping and e cigarettes can lead to a condition called Popcorn Lung? Vaping may sound harmless, but it can seriously impact your breathing over time. Learn what causes it, how What Vaping Really Does to Your Lungs University of Utah Health