I smelled this trailing off of a younger guy in the establishment that I work in and it smelled really super nice! I'm a perfume snob to the bone and hadn't the slightest clue that this perfume he was wearing was going to be Chanel's Bleu of all the scents in the world, to be totally honest, I could've sworn to a T that he was wearing Al Haramain's Midnight Musk from their Exclusive Collection, it smelled almost exactly like it which is an awesome perfume in and of itself.
I'd like to comment on the sillage of this scent as the voting scale shows that Bleu is kinda weak, I beg to differ. The building that I work in is a large restaurant and all of the a/c intake areas are located in the back, so whenever someone is sitting near the entrance to the back of the house, the HVAC units will pull a nice trail of anyone's scent that's seated near the entrances. Well, I could smell this trailing from way far away in the dish pit which is a ways off although when I was near his table, his scent was not bathed in per se so, it was mild and pleasurable, not 'projecting' if that makes sense, Chanel's Bleu eau de parfum has an incredible sillage, a long one. It's very incensy with lots of amber, really warm smelling, the sillage that is. I loved it to pieces so much that I bought a sample for myself to try out.
My opinion from an outside nose is that this is actually a strong scent which I believe is one of those perfumes that you can never smell on yourself while wearing, thoroughly impressed me.
Edit: Funny story and this is the truth... I had ordered a vintage 80's scent from a seller in Italy of all places and when I had received the package, there was a sample of Bleu eau de parfum in it! I couldn't believe it and had to laugh as I'm kinda floored with this perfume. I have officially given Bleu a few proper wearings and although this scent is completely out of my genre that I usually like to wear, I truly enjoy this scent through and through. It's super smoky, sour and sweet but, these 3 different sensations do not clash, they work together in perfect harmony. Even though this scent 'does' smell blue, I seriously like this a lot.
As another word of caution, Blue eau de parfum is absurdly strong and long lasting so totally disregard that sillage scale up top there as this scent has some serious throw that projects continually at the same exact volume. I believe it is due to a moderate use of Iso E Super which is designed to push out heart and base notes continually which I'm sensitive to, but here it is used correctly and it's just enough that I can handle it unlike in Versace's Eau Fraicheur that's an Iso E Super bomb that Bleu eau de parfum just happens to resemble, 'slightly'. This could be as to why I find this scent über strong and others don't. Some people can sense Iso E Super and some cannot, the ones who cannot tend to find those perfumes that use this particular aroma chemical as weak and for the people who are hyper sensitive to Iso always perceive it as nuclear. Seriously, this is a killer scent but super powerful so apply lightly with maybe 1 spray or else it's instant olfactory fatigue. I feel strongly that over appliers of this kinda perfume will recreate a ghastly sillage, I'm talking to you 3+ sprays kinda guys. I literally wore 1 spray on my chest and it was an experience, I felt like I was almost choking myself for hours, this would probably be way better dabbed then atomized because as mentioned before, Bleu eau de parfum is super potent for endless hours.
Also, this perfume smells like 2 entirely different odors when sniffed up close and from afar. Up close it smells blue, from afar, the sillage that is, it's very warm, lots of amber and smoke which almost smells like a super smooth musk accord with the olfactory color of orange. Do this little test... spray some onto the top of your foot when you're at home and walk around a little, then stand there for a bit and walk around some more. You'll clearly smell the sillage that an outside nose is experiencing. Or better yet, spray some on a card, leave the room for a half hour and go back to that room and you'll experience the amber note in this. Synthetic yes but these are some of the best quality aroma chemicals being used here that have been blended properly. I'm not one to like or even love any kind of synthesized perfume but I'll tell ya, I really do love this scent. It just smells great and has been assembled with skill, nothing was skimped here as far as a designer scent goes. Sometimes I crave this odor, this is truly a fabulous perfume.