Can anything be done about sweaty, smelly feet?

Yes.  Your podiatrist can provide advice on the latest materials and treatments available for the treatment of sweaty and smelly feet.  It is important to note that not all sweaty feet are smelly.  Smelly feet are caused by the presence of bacteria whilst sweating.  So, if there is no bacteria, then there is no foul odour.  Therefore, treatment needs to be directed at controlling the bacteria present on the feet as well as the sweating.