yeah my car's a manual. it happens usually when i rev it up off the mark, so its not like im driving the car hard.. i don't have to drive the car long to smell it, basically as soon as i get the car into high rpm (but mostly in first and sometimes second), it starts to smell.
its basically the same smell that blackrolla described - really eggy and burning... it comes through my air-con too, which is just a pain in the *****.
so what could it be? its really a gross smell, and if its because something is burning my engine out, i would like it to stop...