Are Electronic Cigarettes the New Trend? Office for Science and Society McGill University 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 An Overview of E Cigarette Impact on Reproductive Health Smokers switching to e cigarettes have an increased heart attack risk, says ICMR study: Why quitting smoking is the only way out