How about fishing in foggy weather?

Not so good. There are a lot of fine particles floating in the smog, which cannot be completely degraded. If you stay in a smog environment for a long time, you will inevitably inhale fine particles, which will be deposited in the respiratory tract, causing damage to the respiratory system and inducing bronchial asthma, bronchitis and chronic bronchitis. Induced infectious diseases, bacteria are more likely to multiply in foggy days, thus increasing the chance of human infection, which can cause respiratory tract infection, intestinal infection, urinary tract infection and so on.