The Blacklist: Worst Geek Bar Flavors (Ranked) EightVape Chemicals in vapes could be highly toxic when heated, research finds AI analysis of 180 vape flavors finds that products contain 127 'acutely toxic' chemicals, 153 'health hazards' and 225 'irritants' : r science Disposable vapes might look harmless with their fun colors and sweet flavors, but scientists have just uncovered a disturbing truth: these devices can pack a toxic punch even stronger than regular cigarettes. California recalls cannabis vape months after it was told of contamination Los Angeles Times Vaping releases toxic chemicals, including heavy metals, as well as ultrafine particles that go deep into the lungs. These increase the risk of heart and lung disorders.