This lung damage from e cigarettes is permanent and entirely preventable. Flavored e cigarettes, often marketed with candy like appeal, may be far more dangerous than they seem. A recent case involving a U.S. Revisiting airway epithelial dysfunction and mechanisms in chronic obstructive pulmonary disease: the role of mitochondrial damage American Journal of Physiology Lung Cellular and Molecular Physiology American Physiological Society Impact of e cigarette aerosol on primary human alveolar epithelial type 2 cells American Journal of Physiology Lung Cellular and Molecular Physiology American Physiological Society Lung repair and regeneration: Advanced models and insights into human disease: Cell Stem Cell