Thanks for posting your query.
You husband may have cute exacerbation of COPD
and sputum production.
Infected sputum may cause fever
and difficulty in respiration.
You should consult with physician/ respiratory physician and go for chest x ray
, complete blood count
, renal function test, urine routine test, MP card test.
He must take proper treatment for rapid recovery.
Dr. Mayank Bhargava