sinners,
yes maybe, maybe not
100% of one or the other just might be the biggest gamble. Unless of course you have a sensitivity to one or the other.
Some people have a real sensitivity to PG. 30%PG/70%VG usually eliminates that. Some are afraid of the "windshield film" from VG but most of that is condensation that collects other particles and collects on the windshield. Even a single fingerprint can be spread over most of a clean windshield (or camera lens).
I don't 'like' 100% of either. 70/30, 50/50, 30/70 or anything in between works for me.
The jury isn't in on which is healthier. Not yet. But vape what causes you the least concern. It's easier that way and will have a better chance of working on an individual level.
Rocket