Help-How to rid my kitchen of onion smell?

So the past few weeks when I come home I have noticed my house smells like onions. Even when I haven't cooked with them the days before. I have cleaned and scrubbed and somehow my house still had this lingering smell that wasn't there before. Well tonight as DH was searching for light bulbs, he opened a drawer that neither of us ever use. There's old cook books and a tiny crock pot in there. Well he found the onions! There was a bag of onions that was in that crock pot that were so old they busted and turned into this horrid onion juice. MY MOM was just here 2 months ago and totally reorganized my kitchen (I was mostly happy with) but she moved that bag of onions and put them in a drawer that I never use! So I never knew they were in there. Thank God they were sitting IN the small crock and we could just toss that whole thing. But how in the hell do I get rid of this onion smell? I didn't even know onions got old and busted like that?! EWWWW!