Abstract: A device for air decontamination comprises a housing (10) having an air inlet (14), an air outlet (16) and an air flow passage (12) therebetween, the housing including at least one non-thermal plasma cell (22); wherein the non-thermal plasma cell is sized and positioned relative to the internal dimensions of the housing such that a portion of air entering the housing from the air inlet is adapted to pass through and across the non-thermal plasma cell and a portion of air entering the housing from the air inlet is adapted to pass outside of the external surface of the non-thermal plasma cell. A method of decontaminating air is also disclosed.