When I cough I can taste Ammonia. I dont feel the cough in my chest nor do I have any other lung congestion, wheezing etc. I do have allergies to pollen and my apartment complex is full of it. Im on Flueoxiton. Ive taken Day/Night quil, Musinex and a allergy med (name escapes me)  I also have diarrhea, an have to go numerous times throughout the past two days. Ive been sick for almost two weeks and the past three days has been coughing, fatigue and diarrhea. The doctor has told me in the past, for the lack of the proper term, sorry...either my kidney or liver is like a colonder (spaghetti strainer) that has a little bigger hole and that some protein may be escaping....I dont know if thats related
I don't think it is related to any kidney issue.  You should check with your primary doctor if u have been taking any medicines or to check blood work