"Schall und Rauch" meaning in German

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  "lang_code": "de",
  "pos": "noun",
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          "text": "Worte sind Schall und Rauch",
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          "english": "to vanish into thin air",
          "text": "sich in Schall und Rauch auflösen",
          "type": "example"
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          "english": "(please add an English translation of this quotation)",
          "ref": "2016, “Alles grau”, in Berliner Schule / Protopop, performed by Isolation Berlin",
          "text": "Alles grau, alles grau in grau / Alles taub, alles taub, taub, taub / Asche zu Asche, Staub zu Staub / Alles Rauch, alles Schall und Rauch",
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          "english": "to vanish into thin air",
          "text": "sich in Schall und Rauch auflösen",
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        },
        {
          "english": "(please add an English translation of this quotation)",
          "ref": "2016, “Alles grau”, in Berliner Schule / Protopop, performed by Isolation Berlin",
          "text": "Alles grau, alles grau in grau / Alles taub, alles taub, taub, taub / Asche zu Asche, Staub zu Staub / Alles Rauch, alles Schall und Rauch",
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