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. Popcorn Lungs: Teen addicted to vaping diagnosed with popcorn lung: Know what it is and what are the risks The Times of India Bronchiolitis obliterans Wikipedia Health experts are raising the alarm and we need to pay attention. Popcorn lung, medically known as bronchiolitis obliterans, is a serious and permanent lung condition linked to chemicals that have Does Vaping Cause Popcorn Lung?