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Have you considered utilizing activated carbon? I am pretty sure you can buy sheets of carbon filter felt like material from industrial supply houses. The material is used to filter odors and contaminates out of air and water.
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A major source of objection to a free economy is precisely that it ... gives people what they want instead of what a particular group thinks they ought to want. Underlying most arguments against the free market is a lack of belief in freedom itself.
- Milton Friedman
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