Leela: If the Smellescope can pick up the Professor's odour, we may have a chance to save him.
Cubert: I think not. As you probably already don't know, odours are made up of particles that can't travel through the vacuum of space.
Leela: I'm zeroing in on him. [She sniffs.] BENGAY... mothballs... [She sniffs again.]... letters to the editor. It's the Professor!
Bender: To the flying machine!