You’ve stated it EXACTLY as I have been living it since August 22. Bloodwork indicating heart failure and lupus. Specialists, cardiac treatments (wrong and made it worse) eliminated heart failure but determined asthma leading to pulmonary treatments (Symbicort effective but not cured) ending up in bacterial bronchitis. ENT findings inconclusive ( see a speech therapist?). A round of pantoprazole didn’t do a thing. Decided to skip gastroenterology figuring it would be just another dead end. 9 months and I’m better but still not right. Exercise is good like you said but when the nose mucous runs it’s like hallelujah ! Better than the dryness with a glob. Mucous relief pills, gum chewing lots of water. But still… snd it’s not even listed as a long covid problem with the CDC. 🙏🏼