Does your nose hurt when you (or someone else) holds a finger a couple of inches in front of it? Mine does, like an unbearable tickle. Same thing with a lot of people I've asked. When I was really young I used to think I could detect things with it and used to walk around with my eyes shut clumping painfully into walls trying to "hone" my mystical talent.
One of my nasty tricks I used to play on my brother was to pin him down with my legs, arms locked, and nearly scratch his nose while telling him how itchy it was. It was torture; his nose got so itchy that when I let him up he would spend the next five minutes rubbing it.
Suggestion is a powerful tool.
Athon