A fishing lure assembly and the method of making a unique fill composition that causes attractant scent compounds to be dispensed from the fishing lure assembly. The fishing lure assembly has a body that can retain a volume of fill composition. The fill composition contains an ion exchange material and attractant scent compounds that are ionically bonded together. When the fishing lure is submersed in water, the fill composition is exposed to a controlled flow of water. In an ion exchange reaction, ions contained within the water bond to the ion exchange material and thus free the previously bonded attractant scent compounds. The freed attractant scent compounds flow out of the lure assembly with the passing water.