A Kernel of Truth: Diacetyl, Popcorn Lung and E Liquids Dinner Lady Vapes can contain harmful chemicals, such as diacetyl and heavy metals. They just don't put it on the pack. Do you know what you're vaping? Get the facts at nt.gov.au vaping Cancer Council A Comprehensive Guide of Vaping LOST MARY 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