A word to the wise:

[conuly]

Healthy feet don't smell. Feet smell because they're kept in dark, damp, enclosed spaces. Your hands would smell too if you kept them in gloves all the time!

Healthy feet don't hurt either. Feet only hurt when there is something wrong - often the result of being kept in tight enclosed spaces with no ability to move.

With a small number of exceptions, it is safe to say that bare feet = healthy feet.