Smell, Memory, Emotion, Behavior

When nothing else subsists from the past, after the people are dead, after the things are broken and scattered the smell and taste of things remain poised a long time, like souls bearing resiliently, on tiny and almost impalpable drops of their essence, the immense edifice of memory" -Marcel Proust

Why does smell has this ability of instantaneously triggering the memories of events? and then create that powerful rush of emotion?? And when you've decided that THAT is a nice smell, you like it, it will always be processed as nice, never otherwise.

I'm having this realisation which is stopping me from exploration of others.

That scent, is holding me back from every other possibilities; that scent, is intoxicating my every senses. Like the honey bee to flower.