Yet much of a building remains invisible.
Behind the walls is an entire network of spaces that residents rarely see.
There may be insulation, pipes, wires, framing and ventilation pathways.
There can also be evidence of creatures that have been moving around unnoticed.
That is why homeowners sometimes discover old nests, droppings, insect colonies or other surprises during renovations.
A wall may look perfectly ordinary from the outside while concealing an entirely different story.
Not Every Strange Smell Means Something Terrifying
The viral nature of this story can make it tempting to assume that every unexplained odor is evidence of something horrifying.
That’s not the case.
There are many ordinary causes of strange household smells.
A dry drain trap can allow sewer odors into a room. Mold can produce musty smells. Plumbing leaks can create damp or unpleasant odors. Food waste can become trapped in places that are difficult to see.
