think i read somewhere that we can`t directly ingest the liquid nicotine or somethin` so the PG or the VG is what surrounds the nicotine and allows it to vaporize so it enters the human body and is absorbed then the PG/VG leaves?
not a fact though [: i could very well js be wrong.
That would make sense except the nicotrol inhaler doesnt have either VG/PG, maybe it has something comparable.