Biological Odor Elimination BoxHigh-surface-area biofiller for microbial adhesion and growth, enabling the formation of a biofilm on the biofiller surface under suitable conditions. The microorganisms within the biofilm utilize inorganic and organic substances from waste gases as carbon and energy sources, maintaining their life activities by degrading malodorous substances. This process decomposes malodorous substances into odorless by-products such as water, carbon dioxide, and minerals, achieving the purpose of VOCs purification treatment.