We go around sniffing for savoriness, umami type. And I can imagine a million different examples of this in the same way that the scent of somebody that we fall in love with or become romantically attached to is signaling all sorts of things about sure the potential for offspring of a particular immune status. That's a long term game, but also something about pleasure and safety of a potential interaction. So what I'm asking here is about whether or not there are subconscious signals that the olfactory system has learned to seek.

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