How to fix:
1. If the belts on your 3D printer are loose, this can make the printhead shake more than usual. Make sure to tighten them up and see if that solves the problem.
2. Putting your 3D printer on a stable base would be a good idea to reduce vibrations and ghosting.
3. Decreasing the printing speed will also reduce ghosting and make the surfaces of your prints smoother.