What does Roy mean by "smog can prevent missiles" in "Super Brain"?

It is a saying that smog can prevent missiles, but the real words are that smog can prevent laser weapons, not missiles. This is the application of laser weapons mentioned by Zhang in the program, saying that the application of this weapon is limited, and it is not easy to use when it encounters smog.

Zhang's original words are about laser weapons.

In the program about the application of laser weapons, Zhang said that the application of such weapons is limited, and it is not easy to use when encountering smog. The result was taken out of context by some media, saying that he advocated smog and missile prevention.

Technical note:

The maximum diameter of smog particles is 80 microns, and most of them live between 1 micron and 10 micron, while the wavelength of laser is mostly below 1000 nm, that is, below 1 micron, so it is difficult for laser to bypass smog particles, and the attenuation of laser in smog is very strong.