If additives or recycled materials are added to plastic products, the plastic products will carry ethylene, hydrogen sulfide, sulfur dioxide, amine, ammonia odor or other odors. Therefore, generally purchased household plastic pots have peculiar smell, which are generally purchased secondary processed products.

The catalyst tertiary amines used in the production of polyurethane foams often impart strong odors and fog on car interior windows. The solution to this problem is to find alternatives to these amines. If a polyhydroxy compound is used, the polyhydroxy compound is not only a component of the polyurethane molecular chain, but also has catalytic activity.

In many plastics, especially in plastics such as polyvinyl chloride, styrene, polyethyl acetate and acrylate, residual trace monomers can cause unpleasant odors. Those odors can be eliminated with resins with very low residual monomer levels. Also, if a small amount of zeolite (an aluminosilicate adsorbent) is filled in the polymer, it can remove the odor of the material.