I have not used ecigs at all in quite a few years, but wondering if past use for several years could have led to this. Idk, I was fine until flare up back in October and just not the same since. I am going to start treatment with Xolair for very high IgE levels and I had already posted my most recent pft results, also had 2 recent normal chest xrays showing no abnormalities, including no hyperinflation. Maybe Dr. Mannino can offer some advice on this