E Liquide Menthe Frache VDLV 10ml Votre spcialiste e cigarettes, e liquides en Suisse Chemicals in e Cigarettes: Are They Harmful? Conventional and multi omics assessments of subacute inhalation toxicity due to propylene glycol and vegetable glycerin aerosol produced by electronic cigarettes ScienceDirect Toxicity and Appeal of Flavoured E Cigarettes and Flavour Ban Outcomes: A Narrative Review Researchers at the University of California, Riverside, found that heating propylene glycol, the main ingredient in most e cigarette liquids, can produce two toxic chemicals, methylglyoxal and acetaldehyde, which damage lung cells. Using Propylene glycol, a component of electronic cigarette liquid, damages epithelial cells in human small airways Respiratory Research Springer Nature Link