Ha, I learned about no soap on HN some years ago, a HNer claiming their lovers thought the no-soap skin smelled great. I guess it's likely that other bacterial species may thrive on your skin when not washing with soap (soap washing would remove more bacteria, only allowing fast-multiplying bacteria to repopulate the area, while water-washing would leave more different species). Not sure if the microbiome difference is better/healthier/nicer smelling. I jumped at the "my lovers loved it" recommendation and gave it a try (still used shampoo, no success excluding that, washed hands, used deodorant and paid extra care to smelly areas), and the armpits definitely smelled differently (but hardly like flowers) after a while of this practice, __to me__. As pointed out already, that may be have been my olfaction getting used to my newly acquired BO, like not noticing the smell of your own house, but others' houses smell different. My post-training clothes still smelled terrible.