Odorous compounds such as VOCs (Volatile Organic Compounds), H2S and Volatile Fatty Acids (VFAs), can be found in kitchen ventilation and a wide array of different industries. Although the odors do not necessarily impose physical health problems, malodors disturb the surrounding, resulting in complaints towards the source.

Odorous VOCs can originate from microbial or thermal decomposition of organic matter, which is a common process in breweries, wastewater treatment plants, cooking and food industries.

The adsorption principle of activated carbon filters is well established in the removal of odorous compounds.