Okay, I definitely do not know what cianide smells like. I know what coffee smells like, and I know what rum smells like. And while Black Phantom - Memento Mori may be reminiscent of their "darkness", I can't say they have the same scent.
Black Phantom - Memento Mori is immensely dark and it's difficult to place the scents that bombard your nose. I happened upon another fragrance called "Crème Ébène (Eau de Parfum) | Nicolaï" and I was surprised it had a similar scent to Killian! (huh, strange) And it lists Cardamom, Cumin, and Saffron as the top notes. I grabbed a bunch from the pantry, and low and behold, it really was the cardamom... the caradamom brings the same heavy darkness to "Crème Ébène (Eau de Parfum) | Nicolaï" that you find in Black Phantom - Memento Mori.
I love them both! Even if I might never wear them outside. And okay, maybe it does smell a little like cappuccino .