From the classic Gucci Guilty and its flankers to the ultra-luxe The Alchemist’s Garden, Gucci fragrances are wide-ranging. You can go sweet, fresh, woody, oudy, or all-out mysterious.

The fashion house signaled its creative transition on the first day of Milan Fashion Week on Tuesday by sheathing the runway in a plush green carpet and pleated drapery. Red was the signature color of ...