Place a small bowl of approximately 1 cup of white or apple cider vinegar in the bathroom. Use several bowls if the bathroom is large or the smell is very strong.
Soak a rag with vinegar, and use it to wipe down all the fixtures, walls and floor of the bathroom.
Fill a fine-mist spray bottle with 1 part vinegar to 1 part water. Spray into the air in the bathroom to deodorize the room.
Remove curtains and bath rugs if the odor lingers after using cleaning products. Wash them in the hottest water indicated by the fabric care instructions.