The answer to 'are bee dangerous' is that bees can be dangerous, but they are generally not aggressive unless provoked or their hive is threatened. Bees play a vital role in pollinating plants and are an important part of the ecosystem, but they do have the ability to sting which can cause pain, swelling, and in rare cases, a severe allergic reaction called anaphylaxis.
Most bee stings are not life-threatening, but people with bee allergies should take precautions and carry epinephrine auto-injectors in case of a severe reaction. It's important to avoid swatting at bees or disturbing their hives, as this can trigger defensive stinging behavior. If you have a serious bee infestation or encounter aggressive bees, it's best to contact a professional pest control technician for safe removal and management.