Retrofitting and replacing the flue, the wall leaks smoke and the socket switch box leaks electricity. What's the problem?

Your transformation method is seriously inconsistent with the requirements of national norms. There will also be safety hazards such as the fall of the flue upstairs.

If the property knows or other neighbors complain to the property or housing management, they may face the problem of being ordered to restore the original state and being fined.

The reason why other people's oil fume appears in your kitchen:

The joint between the circular pipe connecting the upstairs and downstairs and the main and auxiliary flues upstairs and downstairs is not tightly sealed, which causes the fume in the flue to flow to the tile cement mortar bonding layer through the gap and overflow through the top of the brick surface and the cassette of the switch panel.