The Perfume of the Lady in Black (Francesco Barilli 1974) is a beautiful and fascinating film. Like a previous reviewer, it took me 2 projections before I could fully grasp what Barilli had wanted to do and mostly accomplished with this film.
The problem comes from the fact that this if often advertised as a Dario Argento-like Giallo, and it's anything but that. While it's easy to see the visual and atmospheric influence this film had on Argento, The Perfume is much closer to an Antonioni film than it is to other Italian scare flicks. Watch it with this approach in mind and you will be literally hypnotized.
Kudos to the main actress who delivers a great performance in a role that had no precise definition on paper!