Comment by Jiahang 10 months ago After experiencing the COVID-19 pandemic, I have developed the habit of wearing a mask. 1 comment Jiahang Reply rudolftheone 10 months ago Yeah... The thing is surgical or cloth masks don’t do much against PM2.5. For actual pollution, you’d need a well-fitted N95 — anything less is mostly placebo with ear loops.
rudolftheone 10 months ago Yeah... The thing is surgical or cloth masks don’t do much against PM2.5. For actual pollution, you’d need a well-fitted N95 — anything less is mostly placebo with ear loops.
Yeah... The thing is surgical or cloth masks don’t do much against PM2.5. For actual pollution, you’d need a well-fitted N95 — anything less is mostly placebo with ear loops.