Botrytis or ???

[Carolina girl]

I have a white standard cattleya (Bow Bells x Meditation) that has tan spots on blooms that look like botrytis although nothing else in GH has any botrytis symptoms. I just checked my records & I have a note that it had botrytis last year as well. So I'm wondering if this is something else? Virus?? Or is this particular plant more susceptible than most? We have not been having the cool damp weather that promotes botrytis, nor, as I said, do any other blooming plants show symptoms, so I am wondering . . . .