I used rubbing Alcohol on Paph buds and it didn't harm the buds, but then there were hardly any mealies and I used a cotten bud soaked in alcohol to dab each mealy (or sign of fluff from one) and didn't get much on the flowers in the process.
Make sure and check again daily or every few days for several weeks. Mine came back after two or three weeks and I did the same again as soon as I saw the tiniest trace of them re-appear. They never came back after that, I think I got the second batch before they could bread.
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