Camera continuous rotation after hitting object

I cant for the life of me figure out why but my camera script runs fine, until I $$anonymous$$t a small object then it starts rotating continuously in either left or right. Feel I should also mention Im very new to coding and unity and t$$anonymous$$s code was from a video.

T$$anonymous$$s is the camera script if the problem lies in here.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class MouseLook : MonoBehaviour
 {
 
 
     public float mouseSens;
     public Transform playerBody;
     float xRot = 0f;
     // Start is called before the first frame update
     void Start()
     {
        Cursor.lockState = CursorLockMode.Locked; 
     }
 
     // Update is called once per frame
     void Update()
     {
         float mouseX = Input.GetAxis("Mouse X") * mouseSens * Time.deltaTime;
         float mouseY = Input.GetAxis("Mouse Y") * mouseSens * Time.deltaTime;
 
         xRot -= mouseY;
         xRot = Mathf.Clamp(xRot, -90f, 90f);
 
         transform.localRotation = Quaternion.Euler(xRot, 0f, 0f);
         playerBody.Rotate(Vector3.up * mouseX);
 
     }
 }