You need to be careful what you are adding to this plastic. Anything with water or a water-based product will NOT end up good. If you look thru the Do-It store in the plastics making side of things you will find appropriate scents for cooking into plastics. Other sites have other appropriate products as well. I think the majority of folks add scent to the bags of finished baits and not into the plastic itself.
By the way...welcome to the Do-It forums and family!