The thing that helped me is "smell training". At random moments throughout the day try and sniff things that are just beyond your ability to smell. When I was fully in covid I could just barely perceive some sensation when sticking certain bottles of spice up to my nose.

> Fully vaccinated

How long ago? Covid vaccine efficacy drops significantly over time so if you haven't had a booster recently, you are not vaccinated: https://www.nih.gov/news-events/nih-research-matters/why-pro...

Which that reminds me, I should schedule a booster since I'll be attending a party and a wedding soon.

I last had Covid 2 years ago. My sense of smell came back to about 25% of what it used to be. I describe it to people like distance. Like when a neighbor a couple floors below in an apartment building is cooking tomato sauce and you can smell it a bit by your apartment door. That's what it smells like when my face is over it cooking.

I'd definitely try this gum.