Interesting results! I, too, have uncontrollable blood pressure and tachycardia. and now COVID-induced asthma. Cardiac workup shows nothing (heart monitor and echocardiogram).
I haven't finished my lung workup (cardiac workup was required to rule out before lung workup), but I suspect the same.

After some research, I read an article NIH published regarding the vagus nerve and parasympathetic system upset directly attributable to COVID. There are thousands of recommended exercises (simple and free) that I have been seriously undertaking (in the last week). I have made significant progress in getting this under control. So much so, will soon ask for a 1/2 reduction in both BP and HR meds if this trend continues for the next 2 weeks. I looked at the ganglion block, but because I'm still not through the lung testing, I'm a ways out from any such treatment. Keeping it in my back pocket just in case.

When I initially had COVID, I read about using lavender oil to retrain my brain to smell. I completed the recommended process, and my sense of smell slowly returned in three weeks. Not sure if a direct correlation, but I was happy when my sense of smell returned. I don't believe I have any smell loss - 6 months past the initial infection.