What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Popcorn Lung A Hidden Danger of Vaping , We are now seeing a serious lung disease called Popcorn Lung (Bronchiolitis Obliterans) in some young people using e cigarettes and flavored vapes., Is Vaping Giving You Popcorn Lung? What Is Popcorn Lung? Baptist Health Popcorn Lung: The Deadly Secret in Your Vape! Did you know that the sweet, tempting flavor in your e liquid could be hiding a chemical called Diacetyl? This chemical, which tastes