As some said, it depends on many factors. For me, it is all about how much you push yourself and how much you sweat. As a rule of thumb, I believe that only you can judge if after a commute ride you still smell 'fresh'. It is all about the repsect of other in your workplace. If you can control your natural odor, that is great and go for it!

This thread reminds me of the one with the ass sweat topic. lol