Smells

There is a gross smell in our house and we can't figure out where/what it is. I have been cleaning and sniffing around for two days now. I think I have it narrowed down to the kitchen, but the smell is so strong to me that I can't be in there very long before I start gagging. Thank you pregnancy nose! I am going to see if Steve will check out under the kitchen sink and under/behind the fridge for me tonight when he gets home. Until then, I am either upstairs, outside or running errands. I can't deal with it for very long.