Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Some reports state that these new, flavored smoking devices are less harmful than tobacco cigarettes but how safe is vaping? In this third part of a four part series, China Daily examines the E cigarette flavors are toxic to white blood cells, warn scientists Scripps Health E cigarettes remain the most commonly used tobacco product among middle and high school students in the United States, according to the Instagram Vaping Dangers: What Parents Should Know Attorney General Brian Schwalb File:Adverse effects of vaping (raster).png Wikimedia Commons