| ▲ | Jiahang 2 days ago | |
After experiencing the COVID-19 pandemic, I have developed the habit of wearing a mask. | ||
| ▲ | rudolftheone 2 days ago | parent [-] | |
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. | ||