What E Cigarettes Do to Your Tooth's Surface While e cigarettes, or vapes, may contain fewer chemicals than regular cigarettes, they are still NOT safe. E cigarettes contain harmful chemicals. 99% of e cigarettes contain nicotine, making them highly addictive. Visit https: t.co 1y8cZxtgFQ to Few adult smokers and nonsmokers think e cigarettes have lower levels of harmful chemicals than cigarettes Medical Update Online lunghealth #vape #nocigarette #nosmoking #ecigarettes #healthylungs Stage021 No, there's still no evidence e cigarettes are as harmful as smoking Science The Guardian