What causes body odor?

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>inb4 first google result responses
The study of body odor has been considered a settled science up until a little over a decade ago when we started investigating the significance of human pheromones on behavior
Due to this, nearly all results on the surface of the web are relating to an old theory where it was 100% caused by bacteria
While I'm sure that plays a part, and that people who don't clean themselves properly smell significantly worse because of it, how much of body odor is merely natural fragrance that we've been unknowingly conflating with a bacterial infection due to obsessive use of deodorants and antiperspirants?