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 Impact of Electronic Cigarettes on Pediatric, Adolescent and Young Adult Leukemia Patients Unlike cigarettes, smoke free alternatives such as e cigarettes and heated tobacco products don't burn tobacco and that makes a big difference. Burning tobacco creates high levels of harmful chemicals. Heated tobacco products, Pourquoi comparer "fumer" et "vapoter" est trompeur ? premire vue, le geste semble identique : on inhale puis on expire. Mais en ralit, ce n'est pas le geste qui compte :