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I couldn’t believe that serious scientists would run a study examining the efficacy of air filters with the filters always on “sleep mode”, ie. the lowest fan speed, providing a fraction of the advertised clean air delivery rate. But apparently that’s exactly what they did… 🤯

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Cat in the Hat 🐈‍⬛ 🎩 🇬🇧

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46,451 Aufrufe • vor 10 Monaten •via X (Twitter)

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