Yeah, pretty bad typo. But that's how athlete's foot is transmitted--through the carpet. Most people don't get athlete's foot from concrete surfaces. The fungus needs small fibers--usually with moisture from the sweaty feet or from shower water--to transmit onto another human. On an airplane, the whole thing is carpeted, so if you walk around barefoot and you don't already have athlete's foot, don't say that you hadn't been warned....