The answer to 'why is my rodent odor' is that a persistent rodent smell in your home is typically caused by the presence of dead rodents, urine, or droppings. This can happen when rodents like mice or rats get into your home, nest, and leave behind their waste and decaying bodies.
Common symptoms include a musty, ammonia-like odor, especially in areas where rodents have been active. The smell may be more noticeable in warm, humid weather or near the nesting sites. Resolving the issue requires locating and removing any dead rodents, thoroughly cleaning up droppings and urine, and sealing entry points to prevent future infestations.