Oh yes, most definately. Something weird that happens while you are sniffing several frags at once is that once you have one scent in your nose and goes onto the next one, you see if from a totally different perspective. It is like your nose shuts out some notes and therefore others stand out more clearly. This effect is nothing that lasts, but it still is quite fascinating
But the more frags you learn to like the more notes you'll eventually learn to distinguish so it is no sensation (well, it is to the sniffer, but logically...) you notice different things when you go back sniffing fragrances again.