The volcanic ash cloud & Bees

[Yappy]

I read  "The risk is of fluoride poisoning if they breathe or eat too much," Berglind Hilmarsdottir, a dairy farmer from Nupur, told the AP news agency through a protective white dust mask.

The fluoride in the ash creates acid in the animals' stomachs, corroding the intestines and causing haemorrhages. "
The  ash  is  so fine (some micro-mm) will the bees make it?
Have any beekeepers seen  effects on your bees?