Nothing to do with smelly fell shoes but something you need to be aware of if you are a dog owner.
Most obvious symptoms are lesions on the paws or belly. This can cause potentially fatal kidney problems for dogs and the cause has not yet been identified. Seems to prevalent in muddy wooded areas with a marked increase in the winter months. Needless to say, Mungo now has a shower after every run I take him on (much to his delight!)

Details and location checker here:
http://www.vets4pets.com/stop-alabama-rot/