Passion flower.

So if you google the passionflower you get this:

Mild sedative. Dietary supplement for anxiety and sleep problems, as well as for pain, heart rhythm problems, menopausal symptoms, and attention-deficit hyperactivity disorder.

You also get this:

The scent is sweet, salty, overwhelmingly erotic, thunderously earthy, a sharp shaft of desire. It is the whole ball of wax. Interestingly and, who knows, perhaps the scent also has something to do with this, "Passion Flowers" derive their name from The Passion of Christ.

It also improves the memory of rats.

Google eh? Knows it all.