Perhaps I should just say the best smelling rose my nose has ever encountered. Which is still saying something. I used to be minorly obsessed with roses (in my teens... I sort of grew out of it) and have spent a lot of time sniffing the over 11,000 rose bushes in the Columbus Ohio Park of Roses when I lived in that town. Sniffing through that collection, and every other collection of roses I have come across, nothing comes close to the scent of Madam Ernst Calvat.
Not only is her scent strong (when she is in full bloom, I can smell her easily several yards away at the other end of the garden) but it is marvelous and evocative. I showed a flower to a friend once, and after inhaling deeply, she said, "Wow... that really... takes you places, doesn't it?" Smells are always hard to describe, but to me it is a wild, exotic, smell. Not quite floral, not quite incense, completely marvelous.
If you don't know the good madam, here is what she looks like in my garden:
She's a hybrid perpetual, and like most hybrid perpetuals (indeed, like most roses) she is a gawky, rangy sort of shrub, inclined to get mildew. Which is why, if you look closely in the picture you can see strawberries growing at her feet, and onions in the background. Roses to me are for putting in vases, so I grow them with my other cut flowers out back with the vegetables.
I just wish you could smell it too, through your computer screen. It would set you dreaming.