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, Vape water vapor. What e cigarettes actually release is aerosol packed with harmful substances: nicotine that hooks you, formaldehyde linked to cancer, toxic metals like lead and nickel, and chemicals that irritate Kids Health Info : Vaping and e cigarettes Vape E Liquid Safety: What Every Vaper Should Know Dinner Lady