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