You could specify a few more details. Does your feet sweat. Do they get hot easily when you stand? Do they hurt when you press on your toes? Any other problems like flaking skin or toenail discoloration?
There are few things that could result in bad foot odor.
1. If you have pain in your toes It could be gouty. uric acid crystals in your toes because kidney did not filter completely. --- drink more water and stay away from dieuretics like coffee.
2. If you have flaking and or burning feet it could be foot fungus. this is probably the most common cause. Washing will not help. You have to dry feet thourouly, use a good foot cream or powder with antifungals, and if possible allow shoes to dry out by alternating shoes.
3. You could also have a candida overgrowth. But you probably would ahve other symptoms first before they get down to the feet.
4. Wearing shoes that have become wet. Bacteria will contaminate the shoes and reactivate whenever you wear your shoes.
Also note that ill fitting shoes will exacerbate your condition. They will block circulation. Don't wear size E shoes when you need 3E even though you have to go to a special store. I need 4E shoes and there are only a handfull of stores that carry them onhand around chicagoland.