This is all based on my experience with my last job which was at a retail store there were some pooners who worked there.
Women can get an infection called bacterial vaginosis if the pH of the vagina is disrupted somehow leading to overgrowth of certain bacterial that produce an unpleasant "fishy" odor. While it is easily cured with prescription medication, 1 in 4 women have the condition and probably do not notice the smell after awhile.
When pooners take testosterone, it can imbalance the vaginal pH, leading to bacterial vaginosis. Whenever one of the pooners used the men's restroom, it smelled like rotten fish for awhile, afterwards. Then, shortly before I left, we had a pooner new-hire who literally smelled like a dead fish cemetery from a few feet away.
You know it is bad when you can smell somebody's BV through their clothes, standing in the aisle.