Cough around may also be an Allergy, pseudoallergy to the smell of sweat apocrine glands or intestinal gas
Stress changes the composition of apocrine sweat glands. After treatment of sweat by bacteria, there is the smell. The bacteria can occur from infection.
It turns out a bunch of problems: stress, autonomic nervous system, intestines, flatulence, runny nose, sweating, apocrine glands, infection, bacteria, odor, again the autonomic nervous system and stress again.