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. Risk assessment of inhaled diacetyl from electronic cigarette use among teens and adults ScienceDirect 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