A laminate (200) for a pouch (100) for collecting excreted waste, such as an ostomy pouch, comprises one or more porous layers (5). An adsorbent material is impregnated within the one or more porous layers (5) and a first polymer sheet (8) is attached to a first side of the one or more porous layers (5). Gases can permeate into the one or more porous layers (5), allowing odorous gases to be filtered via adsorption by the adsorbent material that is within the one or more porous layers (5).