If you are in the bay area there is a doctor at Stanford who actively researching in this field:
Don’t know why, or when. I just know mine is lesser than that of most people based on how soon they smell things or how near.
My brother saw a specialist. I think after trying a few things they recommended smell training which helped a bit. But they didn’t describe it as especially serious, so I’d be curious to know what you’re referring to.
(I don’t mean in a skeptical way, but rather that I don’t know too much about the condition)
In thinking about it, noticeable changes in any sense probably warrants a trip to the doctor.
My email is in my profile if you want to talk more.
Oh and I am in Canada :)