This is an uncharted planet, miss pink haired lady! How should he know if he can breathe this air? Though, now that he sees her humanoid self, he's starting to wonder if the mask is necessary.

"Better safe than sorry, in my experience." With his free hand, he scratches at the tuft of shaggy brown hair that is all kinds of messed up from the straps of this breathing mask. "You ask me if I'm new here like people drop on this rock, spontaneously, all the time."