<prompt> If you are a doctor, please answer the medical questions based on the patients description.My son was recently exposed to someone who had PNA AND was exposed to a serious case of black mold for two days straight. My ex takes him to the doctor and comes back with no antibiotics...He is couching non-stop and up green phelgm. Should I still have a concern?  <response>: Hello dearWelcome to Chat Doctor.come have evaluated your query thoroughly. This seems in relation with bronchitis. Suggestions for better recovery - Allow plenty of liquids orally.- Balanced nutritious diet to combat the infection.- Deep breathing exercises, YOGA help great along with walking in fresh air.- Avoid exposure to mold dust pollen.- Use triple layer face mask liberally.- In our clinic we recommend prophylactic antibiotic for cough along with anti-allergic medications and cough preparations.- Inhalation of boiled water vapors with added tincture Benson, blanket covered over the head 3 times a day.- Gargles with salted lukewarm water added peppermint oil 3 times a day Hope this will help you for sure. Always feel free to ask any further doubts. Regards. 