New analysis underscores health risks of e cigarettes Health impacts of electronic cigarettes ANU National Centre for Epidemiology and Population Health E Liquide CBD Recharge Vape & Cigarette lectronique CBDPur New research: Second hand vaping is NOT harmless A recent study published on PubMed is raising serious concerns about the health effects of second hand exposure to e cigarettes. People exposed to second hand E cigarettes might harm lung tissue much like regular cigarettes do whether they contain nicotine or not a new study says. Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health.