ona gel to me smells like the mens bathroom at walmart,, to me it doesnt mask the smell,, it only mixes with it,, so now i smell ona and weed,, its a strange combo,,, carbon filtration removes the weed odor,, it does not mask it,,
you can make your own carbon filters using fish tank carbon sold at any pet store including wal mart,, there is a great section on here on how to build your own out of pencil cubs,, also youtube has some good vids on making your own,, some are built so small they use pc fans and plastic water pipe fitting from home depot,, you dont have to spent much money, and common duct tape can hold it together,, its well worth the effort
