The door is the most important air inlet of the whole house, and the kitchen door is next to it. The dry air in the kitchen will be brought into the house with the people coming in and out, which will make the temper in the house become grumpy.
The same is true of the bathroom door near the gate, except that the dirty air brought out by the toilet will have an impact on the health of the people in the house, mainly dark diseases and other problems.
This is a pattern of the situation. There is no good solution, so we can only keep the kitchen door and bathroom door closed as far as possible, hang a blue curtain on the kitchen door and put a feng shui copper ruler under the bathroom threshold to reduce the dry air in the kitchen and the dirty air in the bathroom.