Aortic annursym if they go away without treatment?

Unlikely: They are unlikely to go away. What is more important if it advances in size or not. Complications are less if they are small and don't increase much in size over time. Make sure you stop smoking (if you do) and control your blood pressure.

No: If you truly have an aortic aneurysm, i.e. dilatation of the vessel wall, secondary to hypertension, smoking, etc. or congenital abnormality, it cannot be wished away. It can be controlled, however, so that it does not progress, i.e. get bigger, and/or rupture, etc.