I had same problem recently.
I lost smell and taste but I can smell myself funny smell. My coworker said that few times already smell something like chicken, food or else. I felt shame to ask them, is it coming from me?
I went to see the doctor ENT specialist, he didn't smell me but told me to take a medication. it's a steroid.
I started to taking it since this morning. I think my case is more likely for the nerve system,,,,
I'm going to crazy about these situation for mentally,, avoiding to see the people. I hope this pill works. I will find out in few weeks.