This is obviously not Jesus commentary on personal hygiene. Something else is going on here. In the ancient world the feet represented the whole self. To lay claim to a piece of territory you place your sandal on it. 10 Feet represent the whole self.
Discipleship is a holistic reality.
We sometimes find ourselves divided into various camps. And the beat goes on. It seems to me that discipleship moves us beyond that because discipleship is about following Jesus, not ourselves. It may be the ideal way. It may even lead to martyrdom, but it is devoid of all promise.