How can I freshen up smelly old ballet slippers?

Question:

How can I freshen up smelly old ballet slippers?

I just dug my leather ballet shoes (not pointes) out of the closet after a 6-month ballet hiatus and want to use them again, but they smell terrible and are kind of dingy. What can I do to get rid of the odor?

Best Answer - Chosen by Asker: baking soda