I would get a sinus infection that would lead to bronchitis every spring and fall for about a decade. Even when I didnt have an active infection I suffered from a persistent cough. Since then I have cleaned up my diet and got better mentally. I still get sinus infections but they rarely progress to bronchitis anymore and if I get a cough its tied to something and resolves quickly. I think so much of this long covid stuff is the spike proteins redamaging tissues.