Like soap, of course! Or water. A clean smell like that.
[he slips into his own changing room, purely to humor PM, with her odd reverence for silly human rules. He pulls his smock off over his head, folds it carefully, and selects a towel and wraps that around himself like a strapless dress. He's so short that it makes a very modest cover-up.]
[after safely putting his smock away in a cubby, he raps on the wall next to where PM's changing]