Question:
Which Scent Can Smell Completely Different On Someone Else, And You Are Surprised When You Ask Them, What They Are Wearing?
For me, the one's I can recognize right away, everytime is: Shalimar, Prada, Aromatics Elixir, Pheromone, Obsession (even though I like it) Patchouli is extremely identifiable, Jovan Musk
The one's that I don't always recognize is- Light Blue, Amarige can smell similar on some, completely different on others, I don't ask people what they're wearing unless I really love it, so I don't know too many that I might not recognize.

Answer:
For the first part of the question, I do right away recognize when anyone wears Hypnotic Poison, Angel and Amarige...
I'm always surprised to hear when someone tells me they are wearing Samsara it does tend to smell a little differently on various people...

Answer:
I recognize Dolce & Gabanna PH every time. For some reason I have problems identifying Chrome on others, even though I wore it myself for a couple years.

Answer:
L'Eau par Kenzo, the awful cucumber juice which everyone seems to overwear because it's supposed to be so "light and inoffensive".
Angel is easy to spot but it still somehow smells slightly different on each wearer.

Answer:
I always recognize Chanel No.5 I have to agree with Tigrushka abiut Angel. I am always surprised at the varience from person to person.

Answer:
Angel and Lolita Lempicka, and Pink Sugar.

Answer:
Samsara, it one I can spot from a distance and Angel also.
For one that smells totally different on another, Organza by Givenchy. I sometimes get someone wearing something lovely and asked what it is? Organza I have been told. Even on spills it smells lovely. But it hits my skin and becomes some strange sickly smell. A friend agreed with me, we where out and I tried some Organza on my wrist, her comment was that is awful!

Answer:
Well I can always tell Coco Mademoiselle, Gucci Rush, Pink Sugar, Champagne (a coworker is obsessed w/it), Poison (and it's children), DK Cashmere Mist for starters.
The one that I can sometimes get and sometimes complete surprises me in Light Blue. My sister wears it, and I was surprised when I asked her what it was. Two ladies at my work wear it too, on one it smells like apples, on the other dried up papery yuck. I guess it's a chameleon.

Answer:
There are a few that I can recognise immediately without much thought: RUSH, Angel, Coco Mademoiselle, Diorissimo, Byblos...
I can spot Light Blue easily, but I am surprised that it seems to smell nice on everyone except myself.
Kenzo Flower is another one which is way over worn by the ladies here in HK as if everyone has a bath tub full of this substance.

Answer:
For the first question: Hypnotic Poison, Youth Dew and Obsession. For the second question, I've been surprised to hear that someone is wearing Ange ou Demon because on her it smelled like Alien to my nose.