A device for carrying out decontamination measures within a room (1) located in a building and used by people (19), comprising:
- a suction means (20, 21, 32) that is assigned to a region of use (7, 9), the region of use (7, 9) having at least two use cells (42) within the region of use (7, 9);
- and
- an air supply means (28),
- wherein the suction means (20, 21, 32) comprises a suction opening (34) which is arranged in a flow guidance plate (33) which surrounds the suction opening (34) and is arranged above a specifiable breathable air altitude (31),
- wherein the air supply means (28) comprises a strip-shaped air supply nozzle (38) which is arranged between the at least two use cells (42) and under the suction opening (34),
- wherein the nozzle generates a strip-shaped supply airstream (41) such that, when the device is operated as intended, an initially strip-shaped supply airstream (41) is converted into a suction flow (30) which conveys air out of the breathable air altitude (31) to the suction means (20) and suctions it through the suction opening (34),
- wherein the flow guidance plate (33) comprises, at least in portions, a suction gap (46) along a peripheral edge (45) thereof, on a side thereof directed towards the air supply means (28),
- wherein an exhaust air flow flows along a flow guidance surface (44) of the flow guidance plate (33) in the direction of the suction opening (34), and
- wherein the suction gap generates a Coanda effect, thereby guiding the exhaust air flow along on the flow guidance surface (44).