Study Finds E Cigarettes Contain Chemical Tied to 'Popcorn Lung' WSJ Lungs After Smoking: Understanding Popcorn Lung from Vaping 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? Africa Harm Reduction Alliance Imaging Findings of Vaping Associated Lung Injury AJR