The purpose of the notification is to provide a means and device to protect against inhalation of contaminated air. The way to protect against inhalation of contaminated air is to:that the first regulated air flow rate from 2 -105 to 10 -105 Pa and the efficiency from 100 to 330 l /min is flown from the air pressure module (1) through the first air flow flexible line (2) to the first air flow channel (3)and then to the exhaust nozzles of the first stream of air (4) located in the face zone and directed to the nearest vicinity of the nose and mouth of the user,and the second regulated air flow rate from 2 -105 to 15 -105 Pa and the efficiency from 100 to 2000 l /min is flown from the air pressure module (1) through the flexible duct of the second air stream (2a) to the secondary air flow channel (3a)； ),and then to the exhaust nozzle of the second stream (4a) in the face zone of the user,from which laminated air is flowing at speed from 0.5 to 2 m /s,favorably 1.5 m /s creates an air curtain separating the face area of the user from the outside contaminated air. The device consists of an air pressure module (1),which is connected by a flexible first -stream air duct (2) with a first -stream air duct (3),and then with the outlets of the first stream of air (4) equipped with a regulated gap or outlets of the first stream of air (7) and connected with the flexible duct of the second stream of air (2a) with the duct of the second stream of air (3a) ),and then with the outlet nozzle of the second stream (4a) equipped with a regulated gap or outlet of the second stream (7a).
