howdy! and welcome!
basic ingredients in eliquid are PG, VG, nic and flavorings - if you take the nic away, you are left with PG, VG, flavorings - PG and VG are both used as food additives, and I believe all the flavorings started as food flavorings, essentially - while i would not recommend drinkin' it, I don't believe it would be considered toxic without the nicotine