An updated overview of e cigarette impact on human health Respiratory Research Springer Nature Link E liquides MENTHE pour cigarette lectronique Nhoss Maison de Vapotage Nicotine, propylene glycol, sweet flavorings, and various toxic chemicals like carcinogens and heavy metals are found in vape juice, posing health risks, especially to youth. Conventional and multi omics assessments of subacute inhalation toxicity due to propylene glycol and vegetable glycerin aerosol produced by electronic cigarettes ScienceDirect