#$%^&*AU2016253576B220181206.pdf#####23 ABSTRACT There is provided an aerosol generating device comprising a storage portion (113, 501) for storing aerosol-forming substrate (115, 505). The device comprises: a vaporizer (119, 509) for heating the aerosol-forming substrate 5 (115, 505), a capillary material (117, 507) for conveying the liquid aerosolforming substrate (115, 505) from the storage portion (113, 501) towards the vaporizer (119, 509) by capillary action, and a porous material (201, 301, 405, 511) between the capillary material (117, 507) and the vaporizer (119, 509). Document261/3 Q00 CMM ......... all)