Frontiers Influence of E Liquid Humectants, Nicotine, and Flavorings on Aerosol Particle Size Distribution and Implications for Modeling Respiratory Deposition Teens, adults who use E cigarettes have increased odds of asthma, asthma attacks EurekAlert! Read "Public Health Consequences of E Cigarettes" at NAP.edu Asthma, E cigs and Vaping: what you need to know Allergy Asthma Care and Prevention Center