There are flies and mosquitoes in the corridor, so it's easy to fly home. What should I do?

What you said is very disturbing. I'll give you an idea. Pick dichlorvos in the narrow part and hang them against the wall by the corridor, or you can hang one at your door. Be careful not to hang too much dichlorvos in the middle of your head, that's where people leave. If you write it on the side and hang it high, it will drive away mosquitoes and flies well. Very effective.