smell: Seeing as she probably takes good care of her feet, the smell wouldn’t be as pronounced. Mild vinegary aroma with hint of sweetness, nothing like the cheese odor one typically gets from build up of bacteria
taste: Salty, with an acidic aftertaste.
sound: There is sadly no official documentation on the foot size of both Kim and her actress (assuming they are the same), but being a reasonably average woman I cannot imagine her feet being louder than size 8s. In my mind, I imagine the satisfying sound of them slapping against the ground, covered in a thin layer of sweat
feel: As mentioned before, Kim’s feel are well cared for, and her pads appear soft. There could be roughness around certain area, but I would overall imagine they’re smooth to the touch