Logan was used to people reacting to him just the way these two did. He had long since accepted it as an inevitable result of his existence, and while in had been suggested to him (both gently and directly, on different occassions) that he might do something to change it, he didn't see the point. He was who he was, and what he was, and it was a good thing, most of the time.
The girl's disgust and surprise upon learning what was in the wall suggested she wasn't familiar with Logan's time and place. He sniffed again, speculatively. Girl and grease and engines and air. Huh. She was from someplace where girls were around engines enough to smell like 'em. "Dead won't do you no harm," he grunted at her.
Joining the other man next to the thermostat and squinted at it. "Crank it back up," he ordered. You wanna freeze us out? If they smell, they smell. S'what bodies are supposed to do anyway."