Internal passive ventilation solution for closed loop dryer systems

A laundry appliance, comprising:

• a cabinet having a front and back connected by sides and a top and a bottom for housing a drum configured to receive laundry items and treat the laundry items during a treatment cycle, the front of the cabinet including a front bulkhead housing a first air conduit, the first air conduit defining a first opening configured to selectively receive ambient air, the back of the cabinet defining a basement area housing a second air conduit, the second air conduit defining a second opening for exhausting carbon monoxide outside of the appliance;
• a door configured to move between open and closed positions to selectively allow access the drum;
• a first cover arranged at the first opening;
• a second cover arranged at the second opening;
• and
• a processor programmed to instruct the first cover and second cover to open in response to the appliance being in a passive ventilation state.