Popcorn lung: Causes, symptoms, and treatment Canadian teen develops 'popcorn lung' like vaping illness, unlike U.S. patients Popcorn Lung (Bronchiolitis Obliterans): Causes & Treatment Popcorn Lung Causes, Symptoms, Diagnosis, and Treatment Lungs After Smoking: Understanding Popcorn Lung from Vaping 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.