Chemicals in e cigarettes may put users at risk Which brands contain diacetyl in their vape juice? Knowledge Kaiweili Digital Technology 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 They may seem sweet and tasty, but each time you vape, you breathe in harmful chemicals. One of these chemicals is diacetyl, used in popcorn flavourings for its buttery taste. When eaten, 1 in 3 teens who vape say they get e cigarettes online, including through social media apps. (PMC study) Parents: Monitor online activity, start the conversation, and stay informed. Learn more at