A new study shows that even-though e-cigarettes are a source of second-hand exposure to nicotine; it’s far, far less than that associated with second hand cigarette smoke. Additionally, when tested, e-cigarette second-hand vapor did not contain combustion related toxicants. Lead author was Maciej Goniewic from the Roswell Park Cancer Institute in Buffalo, N.Y. Published in Oxford Journal, December 2013.
http://ntr.oxfordjournals.org/content/early/2013/12/10/ntr.ntt203.short?rss=1
http://ntr.oxfordjournals.org/content/early/2013/12/10/ntr.ntt203.short?rss=1