Does it have any effect on the exhaust port on the toilet sewage main to seal it?

No, the defecation port is connected to the sewer pipeline, the exhaust port is not waterproof, it should be used for exhaust, it is recommended to connect it to the sewer pipeline

As long as it doesn't break the law, no one cares, you can not open the window when he wants to use it, and you can also add an elbow to his exhaust outlet so that the direction will not be directly facing the window.

It is recommended that you choose Haoting household fresh air system, Haoting fresh air is designed for family use, easy to install without pipes, does not destroy the decoration, can be installed at any time, Haoting fresh air host can output 500 cubic meters of fresh air per hour, for 100 square meters of family, indoor air can be replaced 2 times per hour, Haoting fresh air system is divided into two parts, the host is installed in the living room or balcony (need to punch a hole), responsible for the outdoor air purification into the room, at the same time, Breath treasure is installed on the bedroom window (a piece of glass is required) to exhaust the dirty air from the room to the outside, and then use the air pressure difference between the living room and the bedroom to make the fresh air flow from the living room to the bedroom, so that the indoor air is kept fresh and clean.

As long as there is a window, you can open the window to let in the air. I'm afraid it's not good if you don't have windows!

Generally, the upper end of each group of radiators has a manual exhaust valve, commonly known as running wind, you need to turn left with your hand when you need to exhaust, and then close after venting.