Karen Faye (Michael's long time makeup artist). There may be more tidbits - not sure, but you can become a friend on her Facebook to get them.
"I have had many requests. Like music, our sense of smell activates our memories. Michael and I discovered many years ago (30) we shared a favorite scent. Those who were able to share the same space with Michael, BAL A VERSAILLES, by Jean Desprez, will remind you of him."
Neither Obsession or Joop were a favorite. They may have been a quick buy from his security guards because BAV was not always easy to find."
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"I ordered it online. I bought many bottles for him for London...
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"Michael treated the bottles of this scent like gold. He was always so thrilled to have it. He loved the big fancy bottle, and he liked to carry the tiny little bottles in his pocket. Michael Bush wasn't always so pleased when they leaked in his pocket."
"He was wearing Black Orchid, but that was because it was easy to get. He switched immediately, when I found him BAV. He would ask me everyday if it had arrived after I told him I had ordered it."
"He was wearing BAV in the last weeks of his life."