There are a lot of different types of musty ac smell that you might get after damaging the ac unit. It could have an unpleasant smell like a rotten eggs smell, burning odor, gas smell, and other uncomfortable and unpleasant odor that can cause headaches and dizziness. Each of these smells suggest different reasons to make your air conditioner smell bad in your home.
To check if this smell is just dust burning off or an electrical issue, observe the burning smell from ac for 20 to 30 minutes. If that smell disappears after that amount of time, it was just dust burning. If the smell of electricity still lingers after 30 minutes, call a professional HVAC technician immediately to check the electrical parts of the air conditioner and the HVAC system and make necessary repairs.
