Around the turn of this century, the artist Helgard Haug won a prize to create a public art piece for the Berlin Alexanderplatz U-bahn station, once at the center of the former East Berlin. The piece consisted in a distillation of the scents of the Communist-era station that was put in little souvenir glass vials and dispensed from a vending machine during the year 2000. The scent, called ...