Problem:
The other day we dropped a jug of milk out of the fridge and soaked the spilled milk up with a rag. We sat the rag on the stairs because we were going to go do laundry that day, but we forgot about it. The next day, the rag was still sitting there because I had forgotten it was wet with milk. Then that night or the night after we walked in the house and there was a horrible smell. It still smells bad everytime you walk in because the stairs are right by the door.