Selective filtration is a unique property of cellulose acetate filters. The selective removal of phenolic compounds (phenol, catechol, and cresols) has been detailed for mono acetate filters. Also, the selective removal was determined to be enhanced with the addition of plasticizer to the filters. Although selective removal has been extensively evaluated for mono-acetate filters, the addition of filter additives and their effect on selective removal have not been studied extensively. For this experiment, carbon was selected for the study of the effect of an additive on selective removal, specifically of phenolic compounds. Three different types of filters were used for this experiment, which were dalmatien (carbon on cellulose acetate), cavity, and mono-acetate filters. The delivery and selective removal of the phenolic compounds were monitored over time to determine aging effects for each filter type. It was determined that the use of carbon as an additive in filters does not impact the selective removal of phenolic compounds from the mainstream cigarette smoke. It does impact the enhancement that triacetin has on selective removal and is dependent upon the type of filter type. Dalmatien and cavity filters displayed different removal efficiencies for phenolic compounds.