Hello,
It looks like your bf is presently having chest discomforts due to
chronic cough. From history, he caught this cough due to
fungal infection while working in the mold house.
He has
mold allergy. Help him stay away from such work & areas of high pollution, dust, pollen, smoke, etc. As it will trigger his symptoms. He can take non-sedating antihistamines, like
Levocetirizine for relief.
Get him physically examined by a GP to detect if he is having Asthma & to confirm no developing pathology in the chest. He will have to go through Blood tests & Imaging tests (X-ray, CT, etc), sputum examination /swab tests to rule out COPD.
Help him stay in fresh air & breath
oxygen in a comfortable environment. His treatment will depend upon the pathology detected.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Nupur K, General & Family Physician