Vapes vs Cigarettes: Which One is More Deadly? Atlus Inhale this: What does vaping do to your lungs? Is Vaping Safer than Smoking? 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, Vaping vs. Smoking Which is Safer for Your Lungs? Think vaping is the "healthier" option? Think again. Both smoking and vaping come with serious risks to your lung health, What You Need to Know About Vaping American Heart Association