A stupid question?  Do you know the answer?  It wasn't a burning question for me but still I wanted to know.  Even a baby's feet smell like feet so when does the foot smell start? 
     When daughter Kate was born I was there for the whole grueling 23 1/2 hour process.  Finally the baby popped out, feet first of course... it was Kate.  They handed me the baby and the first thing I did was smell her feet.  Weird, yes, but I wanted to find out and this would probably be my only opportunity to know for sure. 
    Her feet already smelled like feet. Sometime in the womb our feet begin to smell like feet. Now you know.

That. Is. Hilarious.  And a bit awe inspiring. I also wouldn't have had the presence of mind to do something.  Kudos for your deep curiosity into a subject and doing what it took to figure it out!