2 of those I mentioned were true psychopaths who were incarcerated at the time.

Another was a woman who also has no scent. Normally, you can smell someone's sweat, perfume, soap, whatever. She had the most lifeless eyes of all and I couldn't smell her.

I've never been more terrified in my life. And she new it. When she turned around to look at me and smiled, it only intensified the fear.