Activated carbon filters, also known as activated charcoal filters, are used in the cannabis industry primarily to control odor. Carbon filtering is a method of filtering that uses a bed of activated carbon to remove contaminants and impurities from the air, including the strong scent of cannabis. These filters are used in cannabis growing operations and dispensaries to control odors and maintain a pleasant environment.

Activated carbon is a form of carbon that has been processed to have small, low-volume pores that increase the surface area available for adsorption or chemical reactions. These pores are very effective at trapping various particles and gases, including the aromatic compounds responsible for the smell of cannabis. In addition to odor control, activated carbon filters can also help to remove other airborne contaminants, which can be beneficial for creating a healthier environment in grow rooms or other cannabis facilities.