Designed for use with the Chef"n EcoCrock these replacement filters effectively remove odors. Set of two filters. By Chef"n. Chef"n began over twenty years ago based on the principle that kitchen products could be a lot smarter, easier and more fun. Right from day one, Chef"n found an audience hungry for its brand of tasteful ingenuity. Today that legacy lives on with the precision refinements to acclaimed inventions, new technologies, design techniques and entirely new products.