Re: Thoughts on the KM Leather Hose?
Not really, once there is rust there will always be rust. You can blow it out as much as possible to knock free some of the surface rust so you don't inhale it but moisture in hookah smoke will continue to cause the metals inside to corrode.
They are good hoses though and many prefer leathers over washables. If you treat them well you can get some longevity out of them.