Vaping units heat the liquid flavouring to higher temperatures to kind an aerosol which is then inhaled. They contain chemicals such as vegetable glycerin, propylene glycol, nicotine and flavourings, blended in different amounts. Study from The Johns Hopkins University on vape ingredients published in Oct 2021 reveals A huge number https://johnnywqjbr.jaiblogs.com/54059110/how-much-are-vapes-in-the-usa-options