What's REALLY in your cigarette or vape? You're not just inhaling nicotine. Cigarettes contain arsenic, ammonia, and formaldehyde yes, the same stuff used to embalm bodies. Vapes? Heavy metals, toxic chemicals, WHAT PARENTS NEED TO KNOW: We know that vaping is NOT a safer alternative to smoking, and by the time longevity studies on vaping come out, the damage on our teens' lungs what is in vape juice Community Request Diacetyl Center for Research on Ingredient Safety