Stiles notices the krogan and makes sure he scoots a little further away in kind. It's not like he wants to attract any more attention than he already manages to, after all. (It's a good thing he's used to alien creatures not really being nice to him, thanks.)

"Yes?" Stiles tries, making the statement into a question. Of course it looks nothing like home, but maybe expecting to get a drink regardless of where he was would work in his favor.

"I buy compressed air all the time!" Stiles says after a moment, really indignant now. He leaned forward further. "C'mon, man, there's no water and I haven't showered in like, five days, and my room mate is ignoring me, probably because I smell funny."

No, Lydia was probably ignoring him for other reasons. Still. "Can't you cut me a little slack? Pleaaase?" He even draws out the word, giving his best impression of Scott's puppy-dog eyed face at her.