I wouldn´t be concerned with vaping.Sure they are. I'm about to drop a hundred dollar bill on PG, VG, nicotine, flavorings and accessories. I don't expect to kill myself but I'm VERY aware that I just might get sick. I can only hope that I don't choke to death or pave the way in my lungs toward developing popcorn lung.
your going to worry yourself to an early
grave long before the vaping will hurt you.
mike