Vaping What You Need to Know About E Cigarettes and Vaping NYC Health + Hospitals Vaping is the act of inhaling a heated, aerosolized substance. It is critical to distinguish vaping from smoking. Smoking is the inhalation of a burned substance. The main difference between the two 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