Her grandma had her grandpa check the furnace and ducts to make sure it wasn't a dead rodent or something. I also asked whether or not it was during any specific weather (wet weather can make certain types of soil and clay smell like a mixture of rotten animals and feces) because they have an area of the floor that needs repaired.
We have decided through trial and error all the natural causes of the smell and we haven't been able to debunk it. It occurs upstairs in her bedroom, down in the kitchen, in the living room, and in the foyer. None of these rooms are directly off of one another, they all have at least one room or corridor in between, so you would expect the odor to go from room to room.
I'm just looking for any suggestions or similar experiences. I suppose if it was a perfume or floral smell we wouldn't be as concerned, but it's just a nasty smell.
Thanks for any opinions and suggestions!











