I am the recently proud owner of a new beautiful meerschaum. However, knowing how porous meerschaum is, I have some concerns about cleaning it. My main concern is that it is beginning to get a sour taste. I've re-sweetened my corncob and my billiard before (with rum) without issue. However, I'm very concerned about doing anything to damage my meerschaum, and don't want to risk ruining it or affecting it's coloring. Is there anything I can do to sweeten it? Or should I just be a little more thorough with my pipe cleaners?