I have headache from long covid, and it is astounding to me doctors aren't even trying novel treatments when they KNOW it's not a normal headache. I'd be willing to sign whatever waiver if they can come up with an antibodies treatment or something.
Are the dogs detecting long COVID, or are they detecting "I have depression, never wash, never go out, and barely get out of bed each day".
I think my own nose might be sensitive enough to detect the difference in scents...