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 Vapor Hiding Dangerous Ingredients: E Cigarette Concoctions Are Far from Safe American Lung Association E Cigarettes and Vaping OHSU ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine,