Hello, 
Thanks for the query  to H.C.M. Forum.
Clogged  ears, cough. mucus ( expectoration) , feeling something stuck in throat ,breathlessness all these symptoms may be due to,
1 Allergic asthmatic 
bronchitis as in this there develops , whistling ( 
wheezing) sound during breathing,   
post nasal discharge (due to this patient feels that there is sticky material behind roof of mouth or in throat)  , breathlessness (more due to exertion.Diagnosis can be confirmed by physical examination by a physician.
2 Since mucus present so this may be due to 
Bronchiectasis , usually copious sputum present as  far as known  to me coffee (hot) will provide some relief but this is not a treatment .Diagnosis can be confirmed by 
X ray chest and physical examination by a physician. 
Since you got infection and in my opinion only home remedy provide relief not treatment . 
Good luck. 
Dr. HET