How do I stop particles then resume them when the level restarts after I hit an object?

Hello, I have a speed particle effect around my screen when I play, but I want it to turn off when I collide with the tag "Obstacle." If anyone can help me, that would be great! here is my code for the collision. When it collides with the object, it goes into the GameManager which restarts my level. I can also add that code if you want.

Code (CSharp):

1. using UnityEngine;
2.  
3. public class PlayerColission : MonoBehaviour {
4.    
5.     public PlayerMovement movement;
6.  
7.    
8.  
9.     void OnCollisionEnter (Collision collisionInfo)
10.     {
11.         if (collisionInfo.collider.tag == "Obstacle")
12.         {
13.             movement.enabled = false;
14.             FindObjectOfType<GameManager>().EndGame();
15.         }
16.     }
17. }
18.  

 

Are you using a ParticleSystem?

https://docs.unity3d.com/ScriptReference/ParticleSystem.html
Just use the Stop() method provided. Where is the reference to your particles?