What Chemicals Does Vaping Cause Popcorn Lung? : R Vaping Is Popcorn Lung Irreversible The FDA announces its first authorization of fruit flavored e cigarettes intended for adult smokers. This major policy shift comes as teen vaping rates have dropped to a 10 year low and manufacturers have pushed Popcorn lung: Causes, symptoms, and treatment New lung scans prove vaping is toxic. The science is officially in. Scans show that teens have developed "popcorn lung" as a result of vaping. It's a permanent, chronic disease that shortens