I also have asthma. I find VG to be too heavy for my lungs, if I use more than about 16% in my mixes, so I stay at 84% PG, and have no issues.
That is not to say that my asthma has gone away; it hasn't, and probably never will. In fact, I now have to use more medication for my asthma to keep it under control -- I never really needed a maintenance medication before I started vaping, just a rescue inhaler, but now I also need Advair, and still use my rescue inhaler.
I believe the reason for that exacerbation of my asthma is because I never was a non-smoking asthmatic, until last year; I had already been a smoker for 10 yrs when I developed asthma, and over the next 29 yrs, I managed to keep things balanced, though I did go from Light cigarettes to ultra-lights, just because the Lights made me cough so much -- I also developed the habit of inhaling very shallowly, which also prevented a lot of coughing, and fortunately enough, proved to be very helpful when I started vaping; I already knew how to do shallow inhales and only had to learn to do nose exhales.
In any case, it's my belief that quitting smoking/starting vaping disrupted that perilously-balanced homeostasis, which led to more asthmatic symptoms, which at some point will probably ease, as my body becomes more accustomed to its "new normal." Despite more feelings of shortness of breath, after nearly 10 months of non-smoking thanks to vaping, I have very little to cough-up, and what little there is, is thin and clear, not the thick murky stuff I coughed up *constantly* as a smoker; it's probably just the PG/VG being expelled from my lungs, rather than all the toxins and particulates that built up in every day's smoking.
I have seen NOTHING *legitimate* which supports the idea that vaping causes pneumonia; anyone who told you that
a) is wildly uninformed,
b) has an ANTZ agenda, and/or
c) just likes to hear themselves talk and probably hopes to scare and thus exercise some control over someone who vapes.
Andria