<s>[INST] Hey Doc,  I believe I have a chest infection.  It feels kind of bubbly as I breath.  I sometimes have intense coughing fits where I cough up dark green, thick, mucous that almost like a booger.  Other than this, I have no other symptoms of fever, sore throat, or anything like that (although I did have a sinus infection a couple weeks ago, which is where this started I think).  Its been about a month at this point.  I smoke between 3 and 6 cigarettes a day on average.  Given that its just in my chest, and I have no other symptoms now, do I need to see a doctor and get anti-biotics?Phil [/INST] HI, thanks for using Chat Doctor If there is no fever, it is possible that the infection is viral despite the presence of green sputum. In that case, you can consider the following: (1) use of Multics to help break up the mucus e.g. bipolar, Mucomyst, guaifenesin(2)a lot of water/fluids to help break up the thickness as wellie there is no change or worsening, then you would need to see your doctor. I hope this helps </s>