An aerosol delivery device comprises: a storage for storing an aerosol precursor; an aerosol generator comprising an aerosol generator portion configured to receive the aerosol precursor from the storage; an air flow passage configured to direct air past the aerosol generator portion to pick up the aerosol precursor from the aerosol generator portion to form an aerosol; and a barrier arrangement for inhibiting evaporation of aerosol precursor when the barrier arrangement is closed, the barrier arrangement being openable to permit generation of aerosol.