The World Health Organization (WHO) Framework Convention on Tobacco Control (FCTC) has issued a recommended strategy for regulating toxicants in mainstream smoke (emissions). The regulation strategy specifies that the toxicants will be normalized by the cigarette delivered nicotine using the Canadian Intense smoking protocol. Toxicant reduction by filtration is a challenge due to the reduced filter resident time under the Canadian Intense protocol. Current carbon-on-tow and cavity filters technologies are first generation options, but mainstream smoke can by-pass the active particles and reduce their efficiencies. A new filtration platform has been developed to address deficiencies of current carbon based filter technology (smoke by-pass). This filtration platform is based on a porous structure which eliminates smoke by-pass and channeling. The structure can achieve active particle loadings of 20 mg/mm and 8 mg/mm in standard and super slim filters respectively. As a result, significant toxicant reductions can be achieved under the Canadian Intense smoking protocol. Additionally, the porous structure is designed to match the pressure drop of a cellulose acetate filter.