What's this weird reversed memory-olfactory stimulation thing that's going on?

You know how… usually you smell something and it reminds you of something in your past… the smell of school can excite certain memories spontaneously… the smell of a specific perfume sends you flooding back to experiencing emotions of being with a distant ex-girlfriend/ boyfriend etc.

Well, recently I’m having visual experiences..specifically ones where I’m watching TV – films (where the actually sense of smelling the scene of visual perception would be impossible) and will see a particular place and seem to experience some kind of smell sensation in my mind of what that place would smell like… like a reversed memory-olfactory perception kind of thing

e.g. I was watching Powder Blue last night and three times (once in the strip-club, once in the alley and once in the cafe) I experiecned this sensation… without actually smelling it of course… because that would be physically impossible… but like I had the imaginary smell in my mind… it was totally weird!!

And then I remembered that this has happened to me before a couple of times…recently anyone know what is going on in my brain? Is this normal? Anyone else get this? Oh and bear in mind that I’ve never been in a strip-club… but obviously I have been down an alley…although not one like in the film and I have been in cafes…

um…anyone?