Shame on your oncologist. Just because he told you that it wasn't a side effect of your cancer treatment doesn't mean it wasn't part of his job. While you're under his care, everything that happens to your body should be important news to him -- symptoms, medications, reactions, etc. At the very least, he should have referred you to a pulmonologist and received a copy of your records.
And do try the "no battery" method. Sucking on a pacifier that tastes like my e-liquid does help.
I appreciate your point...I was surprised at this, believe me. But I do think bronchitis was a good diagnosis, and I'm pretty sure that I'm doing the right thing. I've had plenty of tests all along, and blood workups on a weekly basis. I'm feeling pretty good these days and I look forward to getting the mastectomy over with, so that I can move on with the rest of the steps that will take me to "all done, already!"