The Lessons of Popcorn Lung: Inhale With Caution 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 Debunking the myth: There's no link between vaping and popcorn lung Popcorn lung: What is it, and who is at risk? Harvard Health Does vaping cause Popcorn Lung? Vaperite