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Generally, there will be small flying insects in the drain, is there a water seal in the kitchen sink?
There are no flying insects in the water inlet pipe, and it must be small insects from elsewhere that fly to the faucet to find water.
The faucet in the kitchen at home has been used for a long time, and the water flow has become smaller.
Water quality and water pressure are exactly the same, they are two pipes separated from one main pipe, both from the main pipe.
The water stops, causing the water from the high level to flow from the high level to the low level (backflow). >>>More
Ask a professional to repair it, and if you do it yourself, be sure to turn off the water valve first (it is not recommended to get it yourself).
Well, it's the water pressure. The house I rented was similar to yours, the water in the toilet was running and the kitchen was running in a big way.