Hello and welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
Coughing can cause a small amount of fluid loss and if there is any
fever, there would also be loss of fluid via the skin. The ammonia smell would be as a result of the concentration/strength of the urine.
When a person passes urine infrequently due to mild or
severe dehydration if a person holds urine, the ammonia odor is stronger because the urine is more concentrated. If there are no other urinary symptoms, burning or other pain, change in color or urgency to urinate then there is not likely a problem with the
urinary tract.
You can continue to use enough fluids (at least 8 glasses a day) and monitor for any other changes. The urinary changes, in the absence of any other urinary tract symptoms, is not likely to be serious.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Michelle Gibson James