I found this article on PG.
http://www.starpages.net/health-info/a-look-into-the-propylene-glycol-side-effects/
http://www.starpages.net/health-info/a-look-into-the-propylene-glycol-side-effects/
I read that as well… When flu season hits I'll need to add a touch of PG to my DIY just as precaution.I ran across a study that said exposure to inhaling PG could keep you from getting colds and the flue as well.
Yes, I guess it also has varying degrees too...depends on how it affects people...I find I have slight dizziness and quite irritated tinnitusEquilibrium instability. Like dizziness? I've been trying to switch to higher vg liquids to combat how thirsty pg makes me, I never knew it could cause dizziness too.
I've heard some hospitals pump pg into the air supply (air conditioning) because it kills germs.