A gaseous-fluid environmental sensor, comprising: an inlet structure defining an inlet intake port to receive a gaseous fluid of an environmental space; an outlet structure defining an outlet exhaust port to exhaust the gaseous fluid to the environmental space; a gaseous-fluid flow system coupled to the inlet structure and the outlet structure, the gaseous-fluid flow system defining a flow path coupling the inlet intake port to the outlet exhaust port, the gaseous-fluid flow system including a blower to move the gaseous fluid from the inlet intake port to the outlet exhaust port via the flow path, the blower having a blower intake port, a blower exhaust port, and a blower vent port, the blower intake port and the blower exhaust port further defining the flow path, and a flow connector (150, 152) including a connector intake port and a connector exhaust port both of which further defining the flow path, the flow connector (150, 152) further including a chamber in fluid communication with the connector intake port and the connector exhaust port; a sealed blower enclosure encompassing the blower, the sealed blower enclosure including an enclosure intake port aligned with the inlet intake port and an enclosure exhaust port aligned with the blower exhaust port, the sealed blower enclosure encapsulating the blower such that the blower vent port can draw or exhaust the gaseous fluid from or within the sealed blower enclosure; a flow sensor to sense a parameter relating to a flow of the gaseous fluid through the flow path and provide a signal based on the parameter; and a controller coupled to the flow sensor and to control the blower based on the signal. an inlet structure defining an inlet intake port to receive a gaseous fluid of an environmental space; an outlet structure defining an outlet exhaust port to exhaust the gaseous fluid to the environmental space; a gaseous-fluid flow system coupled to the inlet structure and the outlet structure, the gaseous-fluid flow system defining a flow path coupling the inlet intake port to the outlet exhaust port, the gaseous-fluid flow system including a blower to move the gaseous fluid from the inlet intake port to the outlet exhaust port via the flow path, the blower having a blower intake port, a blower exhaust port, and a blower vent port, the blower intake port and the blower exhaust port further defining the flow path, and a flow connector (150, 152) including a connector intake port and a connector exhaust port both of which further defining the flow path, the flow connector (150, 152) further including a chamber in fluid communication with the connector intake port and the connector exhaust port; a sealed blower enclosure encompassing the blower, the sealed blower enclosure including an enclosure intake port aligned with the inlet intake port and an enclosure exhaust port aligned with the blower exhaust port, the sealed blower enclosure encapsulating the blower such that the blower vent port can draw or exhaust the gaseous fluid from or within the sealed blower enclosure; a blower to move the gaseous fluid from the inlet intake port to the outlet exhaust port via the flow path, the blower having a blower intake port, a blower exhaust port, and a blower vent port, the blower intake port and the blower exhaust port further defining the flow path, and a flow connector (150, 152) including a connector intake port and a connector exhaust port both of which further defining the flow path, the flow connector (150, 152) further including a chamber in fluid communication with the connector intake port and the connector exhaust port; a sealed blower enclosure encompassing the blower, the sealed blower enclosure including an enclosure intake port aligned with the inlet intake port and an enclosure exhaust port aligned with the blower exhaust port, the sealed blower enclosure encapsulating the blower such that the blower vent port can draw or exhaust the gaseous fluid from or within the sealed blower enclosure; a flow sensor to sense a parameter relating to a flow of the gaseous fluid through the flow path and provide a signal based on the parameter; and a controller coupled to the flow sensor and to control the blower based on the signal.