The answer to 'rodent odor' is that common causes of rodent odors in homes include the presence of dead rodents, rodent urine and droppings, and nesting materials. Symptoms may include a persistent, unpleasant musty or ammonia-like smell. Solutions can include thoroughly cleaning and disinfecting affected areas, sealing entry points, and removing any dead rodents or nesting materials.
If the odor persists or you are unable to locate the source, it's best to call a professional pest control technician. They have the expertise and equipment to properly identify and eliminate the source of the odor.