This reply
uienwt mark this message contains personal perspective
originally written by uienwt
自製口罩只能當作應急,如果真的生病了還是得使用拋棄式口罩。
網上自製口罩的教程,基本材料都是推薦棉紗、毛線、帆布等。這些材料空隙較大,無法有效過濾病毒。除了保暖,阻擋病菌作用十分有限。

Opinion Sources

https://mamaclub.com/learn/口罩拿下來別亂放!這份「口罩指南」,妳想瞭解/

The content above by Cofacts message reporting chatbot and crowd-sourced fact-checking community is licensed under Creative Commons Attribution-ShareAlike 4.0 (CC BY-SA 4.0), the community name and the provenance link for each item shall be fully cited for further reproduction or redistribution.