The answer to 'why is my spider odor' is that the unpleasant smell is likely caused by the presence of certain types of spiders in your home. Some spiders, such as the brown recluse or black widow, can release a pungent odor when threatened or disturbed.
The spider odor is usually described as a musty, acrid, or even skunk-like smell. It's the spider's way of trying to deter predators and warn off potential threats. The odor is produced by specialized glands and can linger in the area where the spider was present.