それを作ろうとすると、たぶん買った方が安い額になります。
てか、そりゃメーカーの集塵脱臭機もあの値段するわなーという感じで、納得の価格でしたとさ。
完全脱臭とまではいきませんが、まあ換気しても苦情はこないんじゃないかなーレベルまでは落とせたので、いいんじゃないかなと(^^;)
あっというまにフィルターつまりますけどね！

When I tried to make one, it probably became cheaper to buy one. Or rather, it felt like the manufacturer would charge that price for dust-collecting deodorizer, so it was a price I could accept.

It won't deodorize entirely, but it can bring it down to the level where I probably won't get complaints even if it vents, so I figure it's all good. (^^;) Still, it got packed full of filters in no time!