Our carbon fiber filters remove up to 99.97% of all odors. They work by taking advantage of a unique quality of activated carbon. This substance absorbs all volatile chemicals. It is the same technology that many water filters use to remove the unwanted flavours of tap water. Some plants release volatile oils which are responsible for the characteristic scents of different plant species. Simply connect your exhaust fan to one of our carbon filters and run normally. Carbon filters can be connected so that they pull air from within the grow room, or so that they push from inside the grow room through the carbon filter located on the other end. Both methods work just as effectively.