Quality carbon scrubbers?

I'm definately gona need one since almost 4 wks in a couple are already smelling strong. Whats the best kind of carbon air filters and is there any other ways to tone down the sweet aroma? I love the smell but already promised to keep it as minimal as possible.

there's "Ona Gel" it works for small grow rooms or tents. I think can filters work best u can make one yourself search you tube for "diy carbon filter" but it won't be as good as the original can filters.