Exhibits tackle questions like: How do the industry’s top “noses” create scents? Why was the original Eau Sauvage by Edmond Roudnitska such a popular bestseller? How is smell linked to memory? The answers are inside the stately mansion that was once the residence of the Roederer Champagne family, and more recently, Christian Lacroix’s maison de couture. At the end of the visit, a robot will fetch the fragrance matching your olfactory profile in the museum's gorgeous store.
— A new Grand Musée du Parfum will open in Paris this December (the last one closed in 2018). Read more in A Sneak Peek at Paris's New Grand Musée du Parfum at Condé Nast Traveler. Update: Nope, my mistake, still closed!
That article is from November 2016, and unfortunately the Grand Musée du Parfum was permanently closed meanwhile.
Total screw up on my part, thank you so much for noticing!!