My advice? Do not vapee. I mean it. Yeah, I vaping, and it's my personal decision, but if you can get out of the habit of smoking without vapear, do it ... I get it, you have an urge to inhale something and you need someone to Help you stay clean.
But if you really want to vapear then you must know the potential risks. Talking about risks .. it seems like everything we do in these days have risks. Guess what? Vaping is no exception. If you think vaping is safe as you are wrong, it is not. The only safe thing is fresh, clean air entering your lungs, vaping involves "safe" chemicals like PG and VG and nicotine.
However, our bodies and especially our lungs are not physically prepared to inhale something that is not natural, nor to handle the quantities of these chemicals that enter our airways.
VG is a thick vaporous substance when you let it rest on a surface. Throw the exhaled steam onto a clean smooth surface a couple of times, and then take a finger free of clean oil and delizel along where the vapor exhaled. See the result? Yes, that's what you're getting into the lungs.