Is There A Link Between E Cigarette Use And 'Popcorn Lung'? Canadian teen develops 'popcorn lung' like vaping illness, unlike U.S. patients Popcorn lung: What is it, and who is at risk? Harvard Health What is Popcorn Lung and Can Vaping Cause It? 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