If both balconies are open, this convection will not have a good impact on health. People think that ventilation will speed up air circulation and fresh air will flood into the room in large quantities. In fact, this idea is wrong. Because of the high-speed airflow generated by convection, the air in other parts of the house will stagnate, and it is easy to catch cold if the wind blows too hard. The practice of closing one reduces this shortcoming.
If there are double balconies, screens can be used to isolate the airflow, which is also a common method used by the ancients. Through the isolation of the screen, the air will circulate around the house, and there will be no convection as before, improving the layout of the apartment.