Carbon monoxide is a toxic gas and is one of the main components of tobacco smoke. Catalytic decomposition of carbon monoxide can be a simple but very efficient procedure for its elimination from tobacco smoke. Zeolite based restricted synthesized catalysts were used for the catalytic decomposition of carbon monoxide. Catalysts were applied in the quantity of 1 % on a tobacco for both local blend type of cigarettes and filter cigarettes. The tested cigarettes were conditioned before smoking under the standard conditions and standardised according to their physical characteristics on a Sodimat device. Chemical characteristics of cigarettes and cigarette smoke before and after the application of catalysts were determined by standard methods in the laboratory of Tobacco factory Niš. Smoking was performed on a twenty-channel Analytical Smoking Machine - Borgwaldt RM20, while the concentration of carbon monoxide was determined by the standard NDIR method on CO Analyzer C21.Measured degree of conversion during the first catalyst application on a tobacco blend was 3,8 % and 12 % during the application of the second one. The highest degree of conversion was achieved by the application of the second catalyst to the acetate filter cigarette and was 24,6%. The application of catalyst affects the increase of stationary velocity of cigarette combustion that is explained by the increased concentration of oxygen in the burning zone, which is the product of the catalytic decomposition of carbon monoxide.