Jack has seen, and smelled, some pretty odd people in his time. His best friend looks kind of like a walking tree. The floating heart braids are new, though.

"I don't know," he answers her with a helpless little shrug. "It's just a feeling, you know?" He can't very well just say it smells funny.

Or that she smells funny. She smells kind of like some kind of fancy hologram, really. He smelled one of those at the Stark Expo once. Still, that's not something you say out loud to a person who seems perfectly reasonable and person-like.