OP so glad to hear, can't imagine how much a drain and weight this has been for both of you. Lots of good thoughts and wishes and for what its worth empathy. No one should have to go through it.
They are studying more rigorously the longer term loss of smell/taste and nothing definitive but I believe the guess is its not permanent but sometimes takes a while to fully resolve. Must be a small ray of sunshine to be able to taste something.