Are e cigarettes dangerous, or a better alternative to tobacco? Vicks Vapo Steam Camphor 8 Fluid Ounce Brookshire's Which Smoking Habit Puts You Most at Risk? Smoking Vs Vaping Electronic Cigarette Vaporizer Stock Vector (Royalty Free) 516507436 Shutterstock Propylene glycol in vapes breaks down into formaldehyde when heated, which is acidic and carcinogenic #chemistry #experiment #science