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 JUUL Pod Ingredients: What's in E Cigarettes? Ads for E Cigarettes Today Hearken Back to the Banned Tricks of Big Tobacco I Smoked an "Opioid Vape" Fifty Bar Vapes Nicotine absorption from electronic cigarette use: comparison between first and new generation devices Scientific Reports