What does it mean when a red patch and a black patch appear on the left side of a car?

Hello, would you like to ask what the red and black patches on the left side of the car mean? Red patches and black patches appear when taking pictures on the left side of the car. This means that the camera itself is dirty. There are mud spots or other stains on the camera. This causes red patches and black patches when taking pictures on the left side of the car. It is recommended to clean it up. You can use wet wipes. Or just get some water and paper towels to clean the camera.