Why glycol? Been smoking pipe tobacco since 1965. I recently received a nice TAD order & among the baccy was a blend that tasted pretty good, no bite etc... But this blend was ruined with a filmy non tobacco taste which I assign to propylene glycol. I can only assume that current tobaccos are laced with this evil substance for one reason only.. To weigh the tobacco down to deliver a heavier product so a lb. consists of less tobacco. Any thoughts?