DIY Carbon Scrubber...Odor Control... - PlanetGanja.com (This one is A+)

Ryoko Builds a DIY Activated Carbon Filter - 30 Minutes, $30 Dollars - The Garden's Cure

Dr. Substrate's DIY Carbon Scrubber - PlanetGanja.com

Step-By-Step Carbon Scrubber Build [Cannabis] - Mycotopia Web Forums

Carbon Scrubber

YouTube - Cat & Dog ODOR REMOVER - Activated Carbon with Fan - WORKS

YouTube - Odor Sok Air Filtration System - Hydroponics=

Some have used dryer sheets and a wiffle ball with a fan inline you can also search for that or maybe someone remembers that post.

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~Voice's In My Head Keep Talking To Me~