Why does my nine month old daughter's feet smell?

lol...my first son had "stinky feet" they actually where a bit stinky..not repulsive though. My mother in law didn't believe me until one day she stuck them up to her nose. It lasted for about a year. I just think it is body chemistry sometimes. My husband goes through a phase from time to time with smelly feet so he must have got it from his dad.