Health effects and known pathology associated with the use of E cigarettes ScienceDirect Citric Acid Produces Respiratory Sensitizers in E Cigarette Vapor Long Term Use of E cigarettes Linked to Respiratory Disease Allergy & Asthma Network Addressing the challenges of E cigarette safety profiling by assessment of pulmonary toxicological response in bronchial and alveolar mucosa models Scientific Reports E cigarette user found to have rare form of lung scarring typically found in metal workers European Respiratory Society warns against vaping for smoking cessation Transitioning to E Cigarettes Aids Resolution of Respiratory Symptoms