| abstract |
The invention describes a filter ( 1 ) with a first filter portion ( 6 ) comprising an adsorbent, for example carbon, and/or a catalyst, capable of reducing various vapour phase constituents of cigarette smoke. The adsorbent/catalyst is separated from a second filter portion by means of a barrier ( 2 ) having pores therein of pore size less than 0.1 μm. The invention also describes a smoking article in which a rod of smoking material, with or without encapsulated flavour, is attached to the above described filter. |