Crableggs, if you just want to renew the smell in a real cedar chest, all you have to do is sand the inside. The cedar wood has a resin in it that makes the smell and lightly sanding it will bring back the odor level. If you want cedar smell in a chest that is not lined with aromatic cedar wood, blocks containing the smell are available at grocery stores or mass marketers like Target, Wal-Mart, or K-Mart. Another way to do this is to get aromatic cedar strips at your home center and line the chest with it. The strips are tongue and grooved in random lengths that you cut to fit and nail in. This stuff can be pretty rough so be careful working with it and it splits easily when nailing.