Just got mine today. Smells very warm in the bottle -- in fact, all of the products do, including the Snow White and Take the Moon oils I got. This mostly smells sugary with no floral notes whatsoever.
I gamely tried out the hair gloss after showering and washing my hair. Currently I'm using some "restorative" conditioners whose scents tend to linger, and I was curious how this would blend with e.g. Olaplex no. 5. I gave the bottle a good shake first. The dispenser took only a few squeezes to prime and produced a good mist (rather than the stream other posts warned about). 6 pumps in wet hair smelled vegetal -- I guessed that was the Olaplex, but on second thought it might be the rose? On my hands, the cloying sweetness took about 15 minutes to dissipate and evolved into something that might be the "lace" and "silver" notes with no cognac or rose.
Update: after a few hours drying with my hair (by the time the Olaplex scent is usually well gone), it has a very "clean" scent that's lost most of its sugar notes and could well be said to have rose notes. I added a few more spritzes to my dry hair out of excitement, and it immediately smelled only lightly sweet. Instead, it was more rose-forward with a leather?-like note, perhapse the lace/silver/cognac combined. In such large quantities, the bottom notes remind me slightly of cough syrup.