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, E cigarettes linked with blood vessel damage National Institutes of Health (NIH) How many cigarettes equal one vape? FDA Warns Firms Illegally Selling E Cigarettes Resembling Products With Smart Technology, Including Phones and Gaming Devices FDA