Can you smell that smell?

There is a smell in my house. I can't find it. It is near my kitchen, that is all I can tell. It is not the trash, the disposal, the fridge the floor. It is nothing obvious. I'm trying to avoid lighting a candle and pretending its not there, but it is. I want it gone, it is embarrassing. I'm afraid someone will show up, take on sniff and think I am some sort of messy pig. I'm not. I'm clean. Well, as clean as anyone with a 20 month toddler can be. I won't lie, my couch and carpet may have a few hidden Yo-Gos and Cheetos, but nothing smelly...I don't think. My son does have a habit of hiding his cheese and his milk inside pans in my cabinets, but I don't think that is it either. Has this happened to anyone else, or am I the only grosso with a smell in her house? Shit now I'm embarrassed I wrote about this...I've got to go, I need to search my cabinets for milk and cheese.