The activated carbon filter is doing what he should do. I bought my kitchen 2 years ago. In the hood of this filter was exactly it. Now it was high time for a new one. The filter takes Bratdunst and smells very good. You can tell when you clean the kitchen, the furniture no longer stick as without hood. Unfortunately, the installation of the clip is immediately terminated, so only 4 stars. Purchase is really worth. Packaging, shipping and processing, all Topp.