Houston Health Department on e cigarette ban: 'While users inhale e cigarette aerosol into their lungs, bystanders can also breathe in this aerosol' Houston Daily Frontiers Influence of E Liquid Humectants, Nicotine, and Flavorings on Aerosol Particle Size Distribution and Implications for Modeling Respiratory Deposition The importance of including e cigarettes in smokefree laws Read "Public Health Consequences of E Cigarettes" at NAP.edu