I have gone through your query regarding cold and that developed blockade in your nose and ears and you have a cough also which is associated with sputum of very unpleasent taste. you are a known case of bronchial asthma
After considering your complaints in all aspects it appears as you are suffering from allergic respiratory tract
inflammation involving your nose and sinuses
and chest. Infection from throat reaches to ear via eustachian tube to involve the middle ear as a complication.
Regarding treatment you should take-
(b) Steam inhalation.
and antibiotic with the concent of your treating physician.
I hope this will help you.