Chemicals in e Cigarettes: Are They Harmful? Vaping can silently destroy your body, damaging multiple organs without you realizing it. Each puff delivers a mix of nicotine, propylene glycol, glycerin, heavy metals, and flavoring chemicals that slowly corrode your Toxic levels of industrial chemicals like diethylene glycolcommonly used in antifreezehave no place in medicines. A new UNODC & World Health Organization (WHO) report shows how criminal networks exploit weak oversight to E liquids and Nicotine: the Freevap guide to understand everything