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A comment on Build a do-it-yourself home air purifier for about $25. Parent comment

Re:Build a do-it-yourself home air purifier for about $25 by kijin on Wednesday November 14, 2018 @11:31PM (#18456873)
Yup, that's a normal house. Doesn't work in a basement, though, unless it has a vent or small window above the ground.
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