By Holly Williams, Erin LyallLondon — From baguettes to focaccia, Europe is famous for its bread. "Millstone, who's spent almost half a century researching food and agriculture science, said most Americans were likely completely unaware that they were being exposed on a daily basis to substances in their food viewed as dangerous in Europe.  In a statement to CBS News, the FDA said that when used properly, potassium bromate converts into a harmless substance during food production