First, don't close the balcony. The balcony is sealed, which will cause poor ventilation in the house, make it difficult to keep the air fresh and reduce the oxygen content; On the other hand, the breathing, coughing and sweating of family members in the house will cause pollution to the human body itself. Living in it for a long time is easy to cause nausea, dizziness, fatigue and other symptoms.
Second, don't keep animals on the balcony. Many urban families are used to raising small animals on the balcony because of their small living space. However, raising animals will produce excrement and odor, which will directly affect families if they are not diligent in cleaning.