Filters ship in 7-10 Days *Cigarette smoke, vehicle exhaust, and cooking odors, along with thousands of other activities generate unpleasant odors. The solution to these problems and many offensive odors associated with Indoor Air Quality is the Carbotron Pleat. The activated carbon used in the Carbotron Pleat has millions of tiny openings that absorb odorous gas molecules from the air, so clean fresh-smelling air remains. Trade names and company names are used for identification purposes only.