San Francisco may become the first US city to ban electronic cigarettes, also called 'vapes,' until more information about their potential long term health effects are known. Some past preliminary studies have highlighted A Major Decision From The FDA Today Could Dramatically Reshape The Vaping Industry KPBS Public Media San Francisco enacts ban on e cigarette sales to curb youth addiction PhillyVoice Vapes Stores in San Francisco: Disposable E Cigs & E Liquid Delivery