Why do rescuers wear masks after the earthquake?

Of course not. Wearing a mask can prevent dust and body odor, but the most important thing is that the sanitary conditions in the disaster area are not good, there will be many germs, and many rotten things will produce many pathogens. Wearing masks can prevent the spread of many diseases and plagues and ensure the health of disaster relief workers. Generally speaking, it is best to wear a PM2.5 mask, such as Kimberly's KN95 series. If conditions do not allow, you can also wear a general medical mask or cover your nose and mouth with a clean towel.