A contained liquid system for use with a refillable aerosol delivery device is provided. The contained liquid system includes an aerosol delivery device having an adapter therein for receiving aerosol precursor composition within a reservoir of the aerosol delivery device, and a container of aerosol precursor composition having a corresponding adapter therein for transferring aerosol precursor composition from the container. The adapter and the corresponding adapter are removably, sealably connectable for refilling the aerosol delivery device with aerosol precursor composition. The adapter engages a valve of the corresponding adapter and includes a body defining separate and distinct filling airflow ports. The filling port transfers aerosol precursor composition from the container into the aerosol delivery device. The airflow port enables a flow of air through at least the portion of the aerosol delivery device when the adapter and valve are disengaged.