Brain Advancement?

Okay, umm, so here's the thing. It's related with my previous post which i mention about my nose ability. Yes, the one that i used to mention people from their smell.

So, lately, i've been daydreaming and dazing off a lot. And in the middle of that daydreaming, i usually thinks about some friends and some situation like friend's house etc. And, the thing i want to tell here is that, when i remember a moment which has a smell, suddenly the smell just come from out of nowhere to my nose. I don't know how to explain this but i think i can smell something which is very memorable to me just by concentrating it. Is this means my brain has advancing in some way? Nobody knows.

And actually, i've been studying about human systems lately in my college. Biology major of course. It was about impulse system blahblahblah. So, in my hypothesis, the human impulse system should be from receptor to brain or bone marrow to effector. But in my case, i think the brain itself become a receptor. For normal situation, usually a signal transmitted into brain from nose when you smell something and then your brain will give a signal to your nose identifying what smell it is or something like that. But i think in my case, the receptor is coming from my imajination. wow. A suggestion indeed.

Oh and another thing is, i really curious about human pheromone. I wonder, is it smellable? Like a low frequency waves, it was there but we human can't hear it but too long exposed with it will have some side effect with our body. Is it working in the same way with pheromone? Can pheromone considered as "low frequency" smell? Dunno. But in my experience, even someone used same perfume with another people, i know there is something different with the smell.

Okay this is getting nowhere so i think i should end this.