I too have a history of allergies and asthma, however my asthma was generally controlled until last year, with flare-ups occurring during respiratory infections but otherwise no symptoms and no medication required.

Then after my 4th Covid infection my asthma became debilitating. I was unable to do anything and at times simply couldn’t breathe even when I was resting. My asthma does not manifest as low O2 so it was difficult to get doctors to understand the severity. My O2 would read fine but I was unable to get a full breath. My best indicator was peak flow measurements.

Finally I saw a pulmonologist who found my allergic responses were severely elevated. My IgE level was almost 7 times over the normal reference range.
Eventually it was decided I should try Dupixant injections. While waiting for an insurance approval I had deteriorated to the point where I was using Albuterol via nebulizer a minimum of 4 times daily.

The good news - after 2-3 injections I was considerably improved. After a couple months I wasn’t using my rescue inhaler, had reduced my maintenance inhaler and had no oral steroids prescribed in that time. It’s been about 7 months now since starting the biologic and I am no longer on any maintenance inhalers, and my rescue inhaler will probably expire before I use it all.

Good luck, hope it works well for you!