I wish I had lost some of my sense of smell. In fact, I was counting on it. Didn't happen.
I did one of those color tests not long ago and found that my ability to distinguish distinct shades is abysmal--I was at the very bottom of the scale. However, I did not take the test pre-T, so I have nothing to compare with.
I was always good with space, but my sense of direction seems to have improved. I can find my way around more easily than I used to. I used to get lost sometimes when finding my way back from a strange place. Nowadays, that happens less often, even though I am less likely to consult my map or written directions.