布要挑软的薄的100%cotton。中间化纤布也要挑软的薄的，能吸小纸屑的。感觉比买的医用口罩舒服，不太闷。

来源: commonSense123 于 2020-06-18 18:38:48 [旧帖] [给我悄悄话] 本文已被阅读：次

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