How Long Does Cigarette Smell Last on Breath and Smoke Stay in Your Lungs? SMOKO E Cigarettes How Long It Takes For Lungs To Heal From Vaping And Exactly When It Causes Permanent Damage 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, Vaping and Oral Health: What You Should Know