Activated carbon/charcoal is treated carbon with the function of adsorbing odor. Activated carbon is an excellent odor and gas adsorbent due to its high porosity and large surface area. The activated carbon package can also perform the same task as other desiccants. They are used to control moisture and humidity, and prevent mold, mildew and other damage by virtue of effective moisture absorption. Not only water, they can also be used to remove unstable and odorous particles.