Stu, I wish I would have read your post before I posted mine...lol. I too have started vaping full time on Jan 5th, and have had strep throat 3 times. My throat is sore and raw most of the time, and I can tell it's coming back already. I've used antibiotics 3 times to clear it up!
I'm wondering (since I can't remember), how to tell the difference between PG and VG by looking at the liquid. I thought when ordering that all liquids were the same and didn't know about PG and VG. So some of them are pinkish and some are yellow. I would like to know the difference so I can try strictly VG for awhile and see if this clears up!
Color usually comes from flavors. Both PG and VG are clear on their own. VG is usually thicker but sometimes comes thinned down in liquids. Most juices have either VG or PG on the label or "mix" which usually means that it's mostly PG with some VG in it to produce more vapor.