What type of surface may need additional treatment to remove odors compared to others?

Porous surfaces require additional treatment to effectively remove odors because they are designed to absorb substances, including contaminants and odors, into their structure. This characteristic means that odors can become trapped within the material, making it more challenging to eliminate them. Treatments such as deep cleaning, extraction methods, or the use of chemical agents may be necessary to reach the absorbed odors effectively.

In contrast, surfaces like plastic, metal, and glass are non-porous, which means they do not absorb odors in the same way. Odors on these types of surfaces can often be removed with simpler cleaning methods, like wiping down with soap and water or disinfectants, as the odors typically reside on the surface rather than being absorbed. Hence, while all surfaces can have odors, porous surfaces necessitate more thorough and specialized treatments to achieve complete odor elimination.