An off smell. Your air conditioner shouldn't be releasing any odor in to the air. When you all of a sudden notice a musty, earthy, or burning smell, Test your device—it likely should be cleaned. A further clue I needed to clean my AC was if I commenced sneezing. "Otherwise https://river3xj42.blogoxo.com/32079663/how-to-clean-air-conditioners-for-dummies