The answer to 'why is my flea odor' is that a strong, unpleasant odor is often a sign of a severe flea infestation in your home. Fleas can reproduce quickly and their waste and decaying bodies can create a noticeable, musty smell. This odor is usually most noticeable in areas where pets spend a lot of time, like pet beds, carpets, and furniture.
The best way to get rid of the flea odor is to thoroughly treat your home for the fleas. This typically involves using a combination of insecticide sprays, flea traps, and regular vacuuming to eliminate the entire flea life cycle. In severe cases, you may need to call in a professional pest control technician to fully eradicate the infestation and remove the odor.