[ He begins to answer, but stops abruptly, holding up one finger to Barma. He tilts his head and... sniffs. ]

Dear, oh dear. It smells like something's been burning~! Haha! Oz must have "left you" his books or his papers, and there was something about them you didn't care for.

Gilbert, I don't suppose you happened to see what it was he set fire to, hm?