Health effects and known pathology associated with the use of E cigarettes ScienceDirect What are the respiratory effects of e cigarettes? The BMJ Experts warn that flavored e cigarettes can cause irreversible lung damage, as seen in a U.S. teenager who developed "popcorn lung"a severe and permanent condition called bronchiolitis obliteransafter secretly vaping for three years. PET imaging shows greater lung inflammation in e cigarette users than cigarette smokers Curious about the difference between healthy lungs and a vapers lungs? See how vaping impacts your lungs, and why its best to quit early. How Smoking vs Vaping Affects Your Lungs You Must See This ! !