<s>[INST] I had shooting pains in my right lung on Saturday that eventually went away. On Monday I started coughing up brown burnt tasting stuff and still am today. Also my ear on the right side now seems to be filling and poping when I blow my nose or yawn. I am a smoker for 20 years but never had anything like this. [/INST] Thanks for your question on Chat Doctor. Since you are smoker, possibility of lower respiratory tract infection (LETI, pneumonia) is high. Your symptoms like chest pain and brown sputum is also favoring pneumonia. In pneumonia, pleurisy (inflammation of pleura) is the cause for chest pain. So you need to consult pulmonologist and get done 1. Clinical examination of respiratory system 2. Chest x-ray. Chest x-ray is needed to rule out pneumonia. You may need antibiotics and antihistamines. But first thing should be smoking cessation as soon as possible. </s>