Is There Diacetyl In E liquid? Vaped How Big Tobacco is Hooking Gen Z Respiratory Health Association 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 Banned Dangerous Vape Ingredients to Avoid in Your Vape Juice Vaping Q& A: What is behind the illnesses tied to e cigs? cleveland.com E Cigarettes at the Point of Sale Counter Tobacco