Is Diacetyl in Vapes? Crystal Vape & Crystal Bar & SKE Vape Official Station Geek Bar Pulse Diacetyl Geek Bar Pulse X 25000 Puffs Disposable Vape Blueberry Jam DYK? Vaping coats lungs with potentially harmful chemicals. This can include chemicals such as: Diacetyl: This food additive, used to deepen e cigarette flavors, is known to damage small passageways in the lungs. 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