Do you know what you're vaping? Propylene glycol (PG) and vegetable glycerin (VG) are the main liquids in vapes. When heated, these chemicals turn toxic and aren't safe to breathe. Stop the Vape Home Stop the Vape Missouri The number of dangerous chemicals in vapes is astounding. Take a look at the uses of some of the chemicals found in vapes: Benzene a volatile organic compound found in car Dangers of Vaping The Shocking Number of Options FHE Health