Popcorn lung: What is it, and who is at risk? Harvard Health Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association Yes, vaping is toxic. A U.S. teen developed "popcorn lung" after secretly vaping for three years a permanent, life altering disease. Officially known as bronchiolitis obliterans, the condition scars the lungs' tiniest Fact One of the most serious and least discussed dangers of vaping is a condition known as popcorn lung, medically called bronchiolitis Instagram Health experts are sounding the alarm about a serious condition linked to vaping, known as "popcorn lung" or bronchiolitis obliterans. This irreversible lung disease is caused by harmful chemicals, like diacetyl, found Is There A Link Between E Cigarette Use And 'Popcorn Lung'?