Jiaodao weather

That's for sure. In this weather, pathogens can easily attach to dust and survive for a long time. Moreover, this kind of gas has a serious impact on the protection and cleaning function of the respiratory tract itself, and the cilia are limited or shed, which will also lead to upper respiratory tract infections (including colds), and the dust particles are very small, which will seriously reduce the self-purification ability of the lower respiratory tract and easily cause lower respiratory tract infections.