Cigarette smoke filter system

Abstract From the Canadian patent

A cigarette smoke filter is provided for use in a smoker's accessory for filtering cigarette smoke, the filter comprises: a tubular filter normally of micro-fibres for removing particulate material from cigarette smoke and optionally an outer filter layer of activated carbon material or the like for adsorbing gaseous components from the cigarette smoke. The efficiencies of the tubular filters is such to remove substantially all of the particulate and gaseous components from the cigarette smoke so that the filtered smoke stream can be discharged into the surroundings free of any cigarette smoke smell.