diy odor scrubber

[sesa]

So the diy scrubber costs $60 and by the time you buy the carbon another $10. why not just buy an ebay generic automotive cone filter with a 4" end and fill it with carbon. They are designed to breathe alot of air through them. They cost maybe $8? So how about someone tries it and saves alot of money. I don't need one otherwise i'd try.