Very helpful and it seems to be correct that it's not usually one specific event that causes this BE condition. My story is similar to yours in some ways in regard to overactive airways and bronchitis; also, strep throat twice. Then, in 2000 I think I was exposed to something in the soil weeding in my mother's yard. I pulled up a weed and a big puff of gray dust came up with it. Shortly afterward I felt totally exhausted and was sick for approx. a month, but the docs pretty much blew off the idea that it was from that dust. Several years ago I went on a trip and came back with walking pneumonia. That seemed to be the final straw that put things over the top. Thankfully, I am finding quite a bit of help from nebulizing and doing my yoga-like floor positions that seem to help a lot to clear the airways. It sounds as if you are pretty much ontop of your situation too. Thanks for the input. I really do appreciate this discussion/ support group!