What brand shoes is this occurring with?
Myself and a few others were discussing this exact topic...the one thing we all had in common--Nike shoes. None of my other shoes make my feet smell...but both Nike pairs I've had recently did.
I replaced my daily wear Nikes with some cheap UA and haven't smelled my feet in months. The Nikes had been worn less than 1/2 year by the time the smell was unbearable (and two of the fellas had purchased them weeks earlier). Chunked my other Nikes and haven't had my feet be ultra-offensive ever since.