These 2 vape flavors are the most toxic Futurity Have you ever breathed in secondhand vapor from a vape? What exactly are you inhaling? It turns out it's a lengthy list of chemicals. FULL STORY Approximately 16,000 unique flavours have been identified for vapes, many of which appeal to potential users. Some flavours increase the toxicity of vape emissions and can generate compounds that are known to 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