Popcorn Lung (Bronchiolitis Obliterans): Causes & Treatment Ontario teen's vaping injury consistent with 'popcorn lung,' study suggests CBC News Doctors have linked vaping to a rare, incurable lung condition called obliterative bronchiolitis, often referred to as popcorn lung. The disease permanently scars and narrows the lungs' airways, causing lifelong breathing problems. Canadian teen develops 'popcorn lung' like vaping illness, unlike U.S. patients Lungs After Smoking: Understanding Popcorn Lung from Vaping