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. Don't Pollute Yourself The Real Cost How do vapes work and what chemicals are inside them? BTN High High concentrations of flavor chemicals are present in electronic cigarette refill fluids Scientific Reports Chemicals in e cigarettes mix together to form new, unexpectedly toxic compounds EurekAlert! The Chemistry of Vaping Products and Cigarettes: A Comprehensive Review Issuu