<s>[INST] thank you for your help my dad had chest x ray and showed cloudiness lower left lung seen the doctor because had a cough for few days while on a trip to Florida also slept on couch for few hours which found out there was mold on lower part of wall doctor said could be an ammonia but not sure what is your opinion [/INST] Thanks for your question on Chat Doctor. In my opinion your father is having left lower zone pneumonia (infection). Travelling history and chest x-ray is favoring the diagnosis of pneumonia. So consult pulmonologist and get done sputum culture and sensitivity to guide antibiotics therapy. If sputum is not available than get done bronchoscopy and BAD (Bronchoalveolar lavage) analysis and start antibiotics accordingly. He needs antibiotics, antihistamines and anti-inflammatory Chat Doctor. So consult pulmonologist and discuss all these. </s>