Hi welcome to Health care magic forum. 
                        Thanks for calling H.C.M.Forum. 
                        Since 4 days you had smell of ammonia, and taste of copper, in the mouth ,with 
cough, you also have C.O.P.D., 
emphysema, 
high blood pressure. alpha 1 antitrypsin and was on aralast, for that. Running slight 
fever. 
                         the taste appears to be due to the purulant sputum in the lungs, it is a some what diffecult to treat condition, as it is a lower respiratory infection, and B.P. and C.O.P.D. cause it difficult for recovery. 
                         I advise you to consult a chest physician for diagnosis and treatment. You may need to have M.R.I. besides other routine tests of respiratoy tract for confirmation. 
                          Wishing for a quick and complete recovery . 
                         Best regards.