What Are the Differences Between an E Cigarette and a Vape Kit? 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 Difference between heated tobacco products and e cigarettes PMI Philip Morris International The impact of e cigarettes versus traditional cigarettes on long term cardiopulmonary outcomes American Journal of Physiology Heart and Circulatory Physiology American Physiological Society