Can't really smell or taste anything? Those are two really great senses. I'm so sorry for your loss!
What is tact?
Anyhoo, mine would be "Are you wearing mascara?"
Now, imagine yourself in the position of the questioner. You are talking to a teenage boy. This is the kind of boy that has a few small spots, looks perpetually tired (I have no idea why, not as if it's 1am right now), usually has a lil' bit of stubble, and the kind of hair that decides that, no, it would not like to stay combed down - whirly and 3d is more my style - and is definitely not wearing lipstick, foundation, or eye shadow.
Yet my eyelashes are apparently long and dark enough, combined with my (and I quote from many a person) "lovely eyes" (shudder), that it looks like I wear mascara.
...now I wonder what they'd look like with mascara. Hm.
Also there's the usual host of 'y u anti-social' and 'y u so socially-awkward', both of which I'm not, and 'y u quiet' (it just gets asked too often, it's a valid question for me though tbh). But that's not as interesting as mascara. Darling.