[ Oh god, Terezi, why did you have to bring up smelling farts! Chizuru's facial expression immediately goes from amazed to.. well, slightly less amazed. Mostly since she's now thinking about the amplified scent of farts. Ew. ]

Maybe you should try staying away from things that smell that unpleasant, you know.. I don't think being able to smell a difference in farts could really help with anything.