A filtration system, comprising: a substantially closed room that is arranged to hold items for treatment in a volume of air; an airstream substance infuser that is arranged to infuse treatment substances into an airstream to generate air-borne treatment substances and that is arranged to introduce the airstream and the air-borne treatment substances into the volume of air of the substantially closed room to generate dispersed air-borne substances; a first filter coupled between an exhaust port of the substantially closed room and an exhaust vent that is arranged to receive an exhaust air current that flows from the substantially closed room, wherein the exhaust air current includes a received portion of the air-borne substances, and wherein the first filter is arranged to capture a portion of the received portion of the air-borne substances coupled from the substantially closed room; a fan that is coupled in series with the first filter between the exhaust port of the substantially closed room and the exhaust vent, wherein the fan is arranged to induce flow of the exhaust air current from the substantially closed room to the exhaust vent, wherein the fan is coupled in series between the first filter and the exhaust vent; a second filter that is coupled between the first filter and the fan; and an exhaust manifold that is arranged to receive the dispersed air-borne substances in the volume of air of the substantially closed room and to couple the exhaust air current to the fan, wherein the first filter includes a first filter bank that is arranged to capture an active ingredient of the air-borne substances and wherein the second filter is arranged to capture organic solvents of the air-borne substances. a substantially closed room that is arranged to hold items for treatment in a volume of air; an airstream substance infuser that is arranged to infuse treatment substances into an airstream to generate air-borne treatment substances and that is arranged to introduce the airstream and the air-borne treatment substances into the volume of air of the substantially closed room to generate dispersed air-borne substances; a first filter coupled between an exhaust port of the substantially closed room and an exhaust vent that is arranged to receive an exhaust air current that flows from the substantially closed room, wherein the exhaust air current includes a received portion of the air-borne substances, and wherein the first filter is arranged to capture a portion of the received portion of the air-borne substances coupled from the substantially closed room; a fan that is coupled in series with the first filter between the exhaust port of the substantially closed room and the exhaust vent, wherein the fan is arranged to induce flow of the exhaust air current from the substantially closed room to the exhaust vent, wherein the fan is coupled in series between the first filter and the exhaust vent; a second filter that is coupled between the first filter and the fan; and an exhaust manifold that is arranged to receive the dispersed air-borne substances in the volume of air of the substantially closed room and to couple the exhaust air current to the fan, wherein the first filter includes a first filter bank that is arranged to capture an active ingredient of the air-borne substances and wherein the second filter is arranged to capture organic solvents of the air-borne substances.