Re: I have quit (Score: 3, Insightful) by email@example.com in Electronic Cigarettes May Not Help Smokers Quit on 2014-03-25 11:56 (#T3) Yes, I probably meant "less harmful" rather than "healthier".You point out that proylene glycol is "potentially dangerous". It is used in and approved for several food products, toothpaste and cosmetics. Not safe for inhaling? Well, it is used in smoke machines too, which have been around for decades and have not been proven harmful. The only difference between an e-cig and a smoke machine is the nicotine (not detectable in an 8m^3 room) and flavorings (does not stink like cigarettes).There are even some indications that PG might be healthy (from a quick Google search): http://www.news-medical.net/news/20091104/Propylene-glycol-in-e-cigarettes-might-keep-us-healthy-says-researchers.aspxVegetable Glycerin is also widely used in e-cigs. It is hard to come across any candy or sweets which does not contain it. It is basically sugar.I think your mom's behaviour is unpolite, to say the least. It is not a question of wether e-cigs are dangerous or not, but of manners. E-cigs are not subject to smoking laws, at least not in Norway, but you got to respect people around you.