In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Wasps
If you see wasps buzzing around you then expect bad news, while if they sting you then you will be upset by people with negative intentions towards you.