Whiz, anymore insight into your possible PG reaction? Do you think your lung problem was from the PG? I meant to answer your blog the other day about this, but here is the thing I've heard from my doc. After you quit smoking your lungs go
through a lot of changes. You may feel great the first few weeks and then you feel worse than before you quit. This is because the lungs start a "cleaning cycle". They assist in the process of cleaning out all the tar etc., by producing more mucus in an effort to get you to cough out the poisons that won't dissolve by themselves. It can get pretty scary. Last time I quit using that horrible Chantix drug that almost killed me, my lungs did the cleaning thing and I thought I had CA. PG is used in lots of medical inhaler products including the asthma inhalers in some brands, so you if you really have a PG problem you should read the ingredients on your inhaler if you use one....