So I have to admit that I have a problem telling if a cologne is directed towards a particular gender, except in very obvious cases (like Old Spice). For example, Speick is described as very masculine. I like Speick a lot, but when I first smelled it, "This is very manly" was not a thought that came to mind. More like, "This smells really good," if you're wondering. Are there quantifiable differences between feminine and masculine scents, as to what ingredients or proportions they have? I have read some about perfume classification, but it seems like just about any type of scent can be appropriate for anyone.