"Jesus, do we have B.O or somethin'?" He means that in a joking way! The fact that she is more than uncomfortable enough with their surroundings goes right by his head. But he won't avoid that question. It would be kind of mean, right?

Marty shrugs, looking to one of the hallways nearby. "I guess we just pick a room? Or maybe they set in little letters for us. Kinda like what they do at fancy hotels."