Yeah, the problems with VG are somewhat less common, but there definitely are some of us who just can't handle much of it; there are even more who find PG so irritating that they can't vape it at all -- fortunately, I don't think I've yet seen anyone who can't find some compromise between them, even though there may be a few like me who have to basically balance on a knife edge between irritation and breathing problems.
It's really a perfect illustration of how vaping really isn't, and can't be, a "one size fits all" solution, no matter what stupid ideas our gov't may have in that direction. Just look how many brands of cigarettes there are! And they all do the same thing! Millions and millions of people smoke, probably for many different reasons, and quitting it seems to have just as many reasons, and just as many ways of making it happen -- vaping is just one of those ways, even if it's the most effective -- and maybe it's the most effective because not only does it approximate many of the sensations and behaviors of smoking, but it can be tailored so personally, for each person's comfort and satisfaction.
Our benighted gov't is never going to be able to understand something so personal and so complex.
Andria