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And@@(s=#;s~StringContainsQ~#&/@(""<>#&/@Permutations@Union@Characters@s))&Subsequences@#~SubsetQ~Permutations@Union@#&
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@att saved 31 bytes
And@@(s=#;s~StringContainsQ~#&/@(""<>#&/@Permutations@Union@Characters@s))&
Try it online!
Subsequences@#~SubsetQ~Permutations@Union@#&
