A toner cartridge for an electrophotographic image forming device according to one example embodiment includes a housing having a reservoir for storing toner. The toner cartridge includes a first vent having an inlet opening positioned to receive air from outside the housing, an outlet opening positioned to exit the received air into the reservoir, and a one-way valve that permits airflow through the first vent from the inlet opening to the outlet opening and prevents airflow through the first vent from the outlet opening to the inlet opening. A check valve limits airflow through the first vent from the inlet opening to the outlet opening.