Students and Vaping Why Teens Vape and JUUL Health Risks Do you know what's in a vape? Nicotine Vapes: the Chemicals They Contain, What They Can Do to You Business Insider What's hiding in that vape puff? Vapes might look clean or harmless on the outside, but inside the aerosol is a mix of chemicals and metals created when the liquid is heated. High concentrations of flavor chemicals are present in electronic cigarette refill fluids Scientific Reports