I am way too lazy for setting up any sort of odor control with my 3 girls. The thing is, I started with a clone (2 weeks until harvest, finally!!) and over the last 4 months, she has not stunk up the place. The only smell is this awesomely pungent citrus-y smell but you have to poke your nose into the plant to smell it.

HOWEVER! I also have a pineapple chunk from Barney's, and she is definitely starting to stink up the place. Without a carbon filter, I gotta rely on DIY odor control.

Like the guys said, NL tends to be quite a odorless strain, but you can get real lucky sometimes, like my clone. Wish I knew exactly what strain it is though...