My wife donated her kidney to me 32 years ago. She says, “I remember that at first certain tastes and smells seemed weird. I ignored it and after a while it diminished. One day I realized that it was gone!” She’s had no adverse health effects since then and at 67 is very healthy and strong.
Then, 11 years after the first one, my son donated one of his kidneys to me. He has never noticed a difference in anything. In fact, the only issue he ever had was right after he donated. They had shaved some of his pubic hair so thay could take the kidney out through a central incision. The itchy and sore pimples as his pubes grew out was a huge problem for him.
I have confidence that your tastes will return to normal. I know how it is tho… after my cochlear implant things tasted metallic, salt was super strong, sugar intolerably strong (!) and citrus fruits were terrible. by the 6 month mark that had all returned to normal, though I am still not liking salty foods I once loved.
Take care and be patient.
You were so generous to donate to your sister, I applaud your decision.
L