hehe, the stank can be a problem. the filter i originaly made worked fine for about 2 moths, after that, it stopped working, and the filter unit i made is not very sevicable:stoned: , you have two choices, choose a strain that is low odor, one strain i found worked remarkably well , was the bunker bud form kindseed co, the other option is just to build a better carbon filter, there are many options on this site. for now the smell is not bad, so im not concerned.