From expired N95 masks to outdoor exercise: Answers to 7 burning questions as haze persists

行业与产业 · 投融资与并购 · sea · 来源：CNA Singapore · 2026-10-24 22:00

A test reveals worse air quality indoors than outside, while product testing shows that some expired masks still filter particles effectively. Talking Point finds out from experts

关键词：综合

原文链接：https://www.channelnewsasia.com/cna-insider/insider/haze-indoor-air-expired-n95-masks-air-purifiers-protect-6488636

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