The Truth About What Vaping Is Doing to Your Body American Lung Association Taking a Science driven Approach to Address the Vaping Threat NHLBI, NIH Vapor from e cigarettes may impair the cells that line the lungs 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,