I can relate to this. After a pretty ordinary cold, which I suppose could have been a Covid-cold, last year, for the first time in my life, I had bronchitis, and it was very severe, very long-lasting bronchitis. A lot of people insisted to me that I had pneumonia, and I think they probably thought that because so many vaccinated people who likely developed the same bronchitis probably had it develop, in turn, into full-on, lung-collapsing pneumonia. As I am unvaccinated, I simply recovered from the bronchitis after four unpleasant months, but it did leave behind a productive cough as a parting gift.