I have three pairs of trainer which I rotate the wearing of them to try and stop them from smelling. Any hints on how to extinguish/precvent there stench?
A friend once told me that if you put cat litter(unused!) in a sock and put them in your trainers/shoes when you're not wearing them it gets rid of the smell! Don't know if it works or not cos I don't have smelly feet but you could give it a go!
I have the same problem after exercising. What I do is to fold up and put a sheet of writing paper into each sole of the shoe. This can easily be discarded or replaced.