If you love to cook with garlic and other strong herbs and spices, your butcher block my not smell very good after a while. To sanitize a wood cutting board or counter top, wash with a solution of 1 teaspoon of bleach in 1 quart of water. To eliminate odors, pour some coarse sea salt onto the surface and scrub it into the wood using the face of a cut lemon. Don't forget to be kind to your wood and put some oil on it. This will help it last longer. Coconut oil is good to use. It doesn't go rancid.