Great suggestion!
Your last statement made me wonder, what I thought was a funny thought, but, well, if everyone smelled the same would we actually smell anything? Or would we be so overexposed to the scent, that we would all become "blind" to it?
The majority of teenage guys I was stuck in classes with at one time seemed to like drowning in Axe and it made me nauseated whenever I'd get a migraine. We probably would get used to the scent, but everyone smelled pretty bad in the ancient world, I'd imagine, and they still tried to cover up BO, so I don't know.
It's just the thought of that much cologne all over makes me a tad nauseated. I just envision a big cologne/perfume cloud.