It appears that PG actually kills both good and bad bacteria in the mouth as well as reduce saliva, which can make your mouth dry and cause bad breath and even dental issues.
Hmmm.. actively seeking a saliva stimulating/producing product (such as
Xylitol) to reduce dry mouth, as well as nasal saline solution (such as
Sinus Rinse) to reduce excess nasal mucus (also caused by PG). Hopefully those will clear these issues up, along with proper hydration.