An aerosol delivery device including a power supply; a vaporizer arranged to selectively receive power from the power supply to generate an aerosol from an aerosol precursor material for user inhalation; and a first electrical interface arranged to provide an electrical connection between the aerosol delivery device and a second aerosol delivery device so as to at least one of: supply power to or receive power from the second aerosol delivery device, or supply control signals to or receive control signals from the second aerosol delivery device.