Sheremetyevo Airport steps up security by introducing more gates and barriers, including the electronic nose. The sniffer-dogs will not be replaced, say the airport officials.
      After the metal detector you pass to the contraption sniffing at you and by exposing you to a gust of wind taking micro particles off your clothes to be analyzed by the gadget. It is possible to detect hexogen, other explosives and a wide variety of drugs.
      Of course, the device could not the real nose of a sniffer-dog so they will go on patrolling the halls.