China Customized R&M YOGOST 3500 Manufacturers, Factory Wholesale Price ROYLIFEE A Kernel of Truth: Diacetyl, Popcorn Lung and E Liquids Dinner Lady Vapes are clouded in misconception . They contain many of the same toxic and cancer causing chemicals found in regular cigarettes. One of these ingredients is diacetyl, used in popcorn flavourings for its 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