Even tho I'm a newb I try to induce relatives, friends, even total strangers who smoke analogs to convert to the vaping religion. Two consistent ghosts of denial are presented by smokers which are battery failure and 'popcorn lung'. I'm aware of the causes of battery failure, but can anyone point me to any studies on the long term effects of glycol inhalation? I'm too old to be paranoid about 'long term effects', just need some rebuttal. Thanks for what you do.