I’d call that an upsideIf you have an asthma inhaler they work wonders. Albeit for a short time.
I had long covid and could barely do 7 or 8 miles on my bike, then I was recommended by a cycling coach to take NAC (N-Acetyl-Cysteine) tablets.
They're usually given to Cystic Fibrosis sufferers to help clear their air ways.
The difference they made was truly unbelievable. I only took them for about 12 days and my breathing was back to normal. Obviously fitness had suffered but the difference was night and day with my breathing.
You can get them without prescription on Amazon.
These are what I got. https://www.amazon.co.uk/N-Acetyl-Cysteine-NAC-600-Capsules/dp/B07FDD16K5/ref=sr_1_1_sspa?crid=2D7S5FPBINY51&dchild=1&keywords=n-acetyl+cysteine&qid=1626856919&sprefix=n-ace,aps,152&sr=8-1-spons&psc=1&smid=A17MDI9IJZP3ZQ&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyUEpJNDFRMjlOVzBQJmVuY3J5cHRlZElkPUEwMDQxMTczMk40VlZTVDFENDg3ViZlbmNyeXB0ZWRBZElkPUEwMDMzNTgwMjhDRUdNNk1CMzVKNyZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
The down side is that your farts are horrific, but it's a small price to pay.