HygieneHabits1 Symptoms, Prevention, and Treatment of Green Phlegm Green phlegm is a common symptom of respiratory infections, especially during the cold and flu season. It is a sign that your immune system is fighting an infection in your body. Although it may seem unpleasant, green phlegm is a natural response to a bacterial or viral infection. In this article, we will discuss the symptoms, prevention, and treatment of green phlegm. Symptoms of Green Phlegm G.. 2023. 4. 6. 이전 1 다음