There's a new piercing-related product that I wanted to let people know about. It is called "Funk-Off" and it is a piercing deodorant.
This is what I say about it in The Piercing Bible, specifically as related to nasal septum piercings:
Septum Piercing: Septum Stench
Once your piercing is healed, you may encounter septum stench (the pungent, rot- ten odor that comes from the sebum that accumulates in healed piercing channels). It is a normal secretion from piercings throughout the body (see “Normal Piercing Secretions,” page 182). However, because your septum piercing is inside your nose, the distinctive aroma is obvious when the smelly substance is present. Don’t worry: only you can smell it!
And this is what it says in the section, Normal Piercing Secretions: