If you're fortunate, the mildew or fungus may be localized to the insoles. Try taking out the removable insoles, stuff the shoes with crumpled newspaper and let them air dry overnight in front of a fan. If that doesn't work, try cleaning the shoes with a 1:1 mixture of denatured alcohol and water, see http://www.ehow.com/how_4883047_remove-mildew-shoes.html
Acid solutions such as diluted vinegar or diluted bleach are usually effective against mildew and its relatives, but also likely to ruin the shoes.
"...I've learned that you shouldn't compare yourself to the best others can do, but to the best you can do....I've learned that you can keep going long after you think you can't..." --- author unknown
2013 highlights...
@ 5K: Ontario Mills 5K, Ontario, CA, 24:42
Heart of the City Run, Los Angeles, CA, 24:13
Bruin 5K Run at UCLA, Westwood, CA, 24:54
@ 10K: LA Chinatown Firecracker 10K, Los Angeles, CA, 51:42
The Great Race - Old Agoura 10K, Agoura Hills, CA, 51:12