You should not smoke because your lungs are damaged when you have pneumonia, and smoking can aggravate the damage to your lungs and worsen your cough. Smoking can damage the bronchial mucosa and prevent the coughing up of sputum, which can cause a large amount of bacteria to grow and is not conducive to inflammation control because of the large amount of bacteria that accumulate in the sputum. Smoking can also lead to increased symptoms such as tracheal spasm and wheezing, and smokers are also prone to lung disorders such as chronic bronchitis and emphysema. Because smoke can weaken the defenses of the airways and can easily combine with bacterial infections, people with pneumonia need to quit smoking. Long-term heavy smokers are also at high risk for lung cancer. The main treatment for pneumonia is still antibiotic therapy.