Aw the smell of marijuana budding out. It's always been one of my favorite smells and many of you probably feel the same way. It is a feeling that is not shared by all though. The smell of marijuana is probably one of the main reasons that neighbors call the police on you. There you are minding your own business when you get that knock on your door and there stands the man. It is also a way that criminals who want to come and steal your weed find out its there in the first place. No question about it you need to get rid of that smell.
We all know that the local grow stores have many ways (some cheaper that others) to get rid of that smell. Maybe a negative ion generator fits in your budget or maybe just a spray can of ozium. In between is a fancy charcoal filter with a fan and HVAC piping right out the ceiling and roof of your grow. Charcoal filters can run from a hundred bucks all the way up to a thousand. If you would like to beat that down a little then get on the internet at maybe craigslist for our area and find a used in-line fan. Then I've seen growers simply take a bag of charcoal that they use on their BBQ pit. Cut a hole to match your fan size on one end and a hole on the other end to match your corresponding size HVAC pipe. The whole system can be done for as little as 50 bucks. Sound hokey but I've seen growers make it work.