I once dated a guy. We exchanged underwear so that we could smell each other when we were apart as it was a long distance relationship.

He asked me to wear a pair for a few days--I just wore them during my workouts twice and sent them to him.

He wore a new pair for two days during the day (he rarely wore underwear), cam in them, packed them in a ziplock, and sent them to me Fed-Ex.

Once they dried, they were the best JO material for me when I was missing him.

Men and women give off the most distinctive scents from their pits and crotches.