Embodiments of the invention provide a fluid cleaning system. The system can include a housing capable of being coupled to a building structure. At least one first intake, at least one second intake, and at least one outlet are disposed through a portion of the housing. A ventilating assembly is supported within the housing and is capable of generating a fluid flow. In some embodiments, at least one detection apparatus is in communication with the ventilating assembly. At least one shutter is operatively coupled to the housing. The shutter is configured and arranged to move between at least a first position and a second position. At least one filter can he supported within the housing.