Consult a podiatrist, you may have a fungal infection. I had that throughout my teenage years, it cleared up after about three years of treatment. That OTC stuff only works in mild cases.

Tea tree oil spray. Works wonders and feels refreshing too!

Use anti fungal spray on your feet, widely available at drug stores. Also, dry your feet well between toes after shower.

I do. But not with flats obviously

Amputate the feet...they will be gone. Walking will be a problem though.

Seriously, though, do you wear socks? I went through a period where I did not wear socks, and things were bad....really bad. Now, I either wear socks, or wear sandals.

Get some rubbing alcohol and a spray bottle. Every night, spray your feet and the insides of your shoes to kill the bacteria that is causing the smell. Of course, if you have a cut on your foot, don't spray the alcohol.

My feet smell horrible even after I shower. I get pedicures and I use Lotromin powder. Nothing seems to work.
Any other ideas?