Abstract: A device for dispensing and/or diffusing a volatile compound such as a fragrance, or other similarly volatile compounds, comprises a controller unit connected to a motorized fan unit for producing an airflow in an airflow path between an air inlet and an air outlet. The device also comprises a removable cartridge containing a substrate bearing the volatile compound(s); the cartridge being generally located in the airflow path, typically downwind from the fan unit. The airflow flowing through the device picks up the volatile compound molecules from the substrate, typically from its surface, and carries them such as to dispense them in the air. The cartridges are provided with a computer-readable unit having stored therein information which can be retrieved by the controller unit, the controller unit being configured for retrieving and updating the information and for driving the fan unit based on the information retrieved from the computer-readable unit.