The review of "Ninotchka" in Time Magazine was written by Whittaker Chambers. Chambers had been an undercover spy for Russia until 1938. Of course, his relationship to Russia and Communism was not known when he wrote his review. Chambers went on to become famous when, in 1948, he accused Alger Hiss of being a spy.
Studio publicity information indicates that for the first time in her career as an actress, Garbo attended the preview screenings of the film, one of which took place in Long Beach, where Garbo reportedly stood in line to buy tickets for fifteen minutes before anyone recognized her.