Do you find raw cookie dough irresistible? It could be a problem. The flour may contain bacteria–specifically Shiga toxin-producing E. coli O121. Common, light symptoms are diarrhea and abdominal cramps that go away in a week. However, in children under 5, it can cause a type of kidney failure. Be aware that even homemade "play" clay from raw dough could cause an infection. Read the whole U.S. FDA statement.
PositiveTip: For your safety, avoid eating raw dough and wash hands, surfaces and utensils thoroughly after contact with flour.