NOVELTY - A treatment apparatus comprises a dielectric barrier discharge non-thermal plasma (NTP) generation cell having a gas flow path; cell gas inlet (24) leading to the gas flow path through the cell; and cell gas outlet for discharging gas that has passed through the cell.    USE - The apparatus is used for treating odor and volatile organic compound contaminants in gas emissions by passing a gas through a dielectric barrier discharge non-thermal plasma generation cell to create a range of reactive oxygen species in the gas which causes oxidation and/or reduction of odor causing molecules and volatile organic compounds; and mixing the gas to be treated with the gas having been passed through the dielectric barrier discharge non-thermal plasma generation cell to allow the reactive oxygen species to react with the odor-causing molecules and volatile organic compounds in the gas to be treated (claimed).    ADVANTAGE - The apparatus restores the electrical dielectric integrity of the cell and damaged parts can be replaced.    DETAILED DESCRIPTION - A treatment apparatus comprises a dielectric barrier discharge non-thermal plasma (NTP) generation cell having a gas flow path; cell gas inlet (24) leading to the gas flow path through the cell; and cell gas outlet for discharging gas that has passed through the cell. The cell has electrically hot electrodes and ground electrodes positioned in the gas flow path so that gas flowing in the gas flow path will flow across a portion of the electrodes. The hot electrodes are hermetically sealed across the gas flow portion of the electrodes.    An INDEPENDENT CLAIM is also included for a dielectric barrier discharge NTP generation cell comprising:    (a) electrically hot electrodes;    (b) ground electrodes;    (c) fluid flow path formed between the ground electrodes and the hot electrodes so that a fluid flowing in the fluid flow path will flow across a fluid flow portion of the electrodes;    (d) dielectric material hermetically sealing each of the electrodes across the fluid flow portion of the electrodes;    (e) cell fluid inlet leading to the fluid flow path through the cell; and    (f) cell fluid outlet for discharging fluid that has passed through the cell.    DESCRIPTION OF DRAWING(S) - The figure is a side elevation of the apparatus.    Main flue (20)    Inlet end (21)    Mixing chamber (22)    Cabinet (23)    Inlet (24)