Mystique: the quality of being mysterious or secret that makes somebody/something interesting or attractive.
The collocation is 'mystique surrounding', so I find only #2 natural structurally. Additionally, the word seems inappropriate in the contexts of #1 and #3.
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Viraam RaoWhen do we use the collocation 'mystique about'?You can use FrazeIt to research such questions: http://fraze.it/n_search.jsp?q=mystique+about&l=0