Sexually Transmitted Disease Can Make Sweat Smell Foul

In the study, women rated the scent of armpit sweat from men with gonorrhea as less pleasant than the scent of sweat from men without gonorrhea. The women were also more likely to describe the sweat smell as "putrid" if it was from a gonorrhea-infected individual. 

 

http://www.livescience.com/17403-std-smell-gonorrhea.html