答：肺气肿是一种慢性疾病，主要是由于长期吸烟或其他原因导致的肺损伤。一般来说，肺气肿不会直接传染给家人，但是患者可能通过咳嗽、喘息等方式将病原体传播给他人。
以下是一些预防和控制肺气肿传染的建议：
1. **保持清洁环境**：Regularly clean and disinfect surfaces, especially those that come into contact with saliva or mucus.
2. **咳嗽时使用手套**：When coughing or sneezing, use a tissue or your elbow to cover your mouth and nose, rather than your hands.
3. **保持卫生习惯**：Wash your hands frequently, especially after coming into contact with saliva or mucus.
4. **避免接触他人**：If you have a cough or other symptoms, try to avoid close contact with others to prevent transmission.
5. **使用加湿器**：Using a humidifier can help relieve congestion and reduce the transmission of respiratory viruses.
请注意，肺气肿是一种慢性疾病，并不是一种传染病。如果您或您的家人被诊断为有肺气肿，请遵循医生和健康组织的建议进行管理和预防。
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