What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Vaping delivers heated chemicals directly into the lungs. Unlike air, vape aerosols contain fine particles, nicotine, heavy metals, and flavoring compounds that were never designed to be inhaled. Once inside the chest, Smoking or vaping both harm your health., They damage your lungs, strain your heart, weaken immunity, and reduce overall well being., Choosing less harmful doesnt mean choosing safe., Your health How To Inhale Vapour: Learn To Vape The Right Way Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times