What’s Something Your Family Does That Others Would Find Unusual?

You use what in questions when you ask for specific information about something that you do. Definition of what pronoun from the oxford advanced learner's dictionary. Used in questions to ask for particular information about somebody/something.

What (= what job) does he. A) used to ask someone to repeat something they have just said because you did not hear it properly ‘could you turn the music down a bit?’ ‘what?’.