So that is...new. Ish. He really hopes he didn't just jinx them with the whole trusting Derek not to hurt him thing. He goes still, and he can feel his pulse speed up a little.
"Um."
Stiles rubs his thumb against Derek's, turns his head a little and rubs his cheek against the top of Derek's head. "I showered before I came over," he says quietly, self-consciously. "With some...fragrance free sensitive skin stuff." Because he thought Derek might be sensitive to smells and he thinks about this stuff too much.
He swallows, adam's apple bobbing. "Do I smell gross?"