Clunkytrain - my husband might disagree with me and say I have already lost my mind but hey. ;)
Yes. I have read a ton on anosmia and have read the same. With Alzheimers in my family tree, that worry is in the back of my head.
I thought my anosmia was brought on by nasal polyps. So, a few years ago, I had them removed. They said the outcome of a return of smell was 50/50. Unfortunately, it didn't work. But hey, at least I can see, hear, walk, think, .....
Sorry you are fighting the same Lyme & anosmia battle as me. Hang in there. We got this.