Did you try washing the shoes? The Brooks website says:
"Remove the internal liner and hand wash the shoes in warm water with mild soap. Washing machines are too aggressive, and may cause shoes to stretch or warp.
Stuff your shoes with newsprint (plain if you have it) and allow them to air dry. When they are all dried out, you can reinsert the liner and hit the road again."
If that fails, go ahead and machine wash in warm or hot water, because you have nothing left to lose.
I'm assuming that you're always wearing socks too. Preferably cotton. I know synthetic sports socks are made for low friction running, but stinky-foot people do better with cotton.