Health effects and known pathology associated with the use of E cigarettes ScienceDirect What Are the Differences Between an E Cigarette and a Vape Kit? E cigarettes: a quick guide to their risks Have you been thinking about trying e cigarettes? Think again! Most e cigarettes contain #nicotine and harmful emissions. Some products claiming to be nicotine free have been found to contain nicotine. Nicotine is highly addictive