When I got my car a few thousand miles ago I noticed a distinct smell of socks whenever I turned the AC on. It would only linger for a few minutes but it still bothered me.
A quick search and I found this thread
with a suggestion to spritz a water + bleach solution to kill mold that may cause the odor. I gave it a shot and it worked like a charm. Of course if after this you still experience a strange odor you should consider replacing your cabin air filter (that's a whole 'nother guide).
Anyway, I decided to make a quick, Illustrated guide of the whole process. I hope someone finds it useful.
* If anyone has any suggestions let me know
Search Keywords: Smell stink stench foot socks moldy