particle effect repeat twice after collision

So I have this issue When my object collide(Rock) , it performs an particle effect (rock into pieces) in the same position the rock collied, It supose to perform this effect per object (in this case 2 rocks), the first attempt the 2 rocks collide in the ground and perform the effect the way I want, Awesome, then around 2 seconds later, my effect apears again, but without any objects colliding and in the same spot, So I want to prevent that and only perform the effect once per object collide

Here is my Code:

 using UnityEngine;
 using System.Collections;
 
 public class destroy_meteor : MonoBehaviour {
 
     public ParticleSystem meteor_d_effect;
 
     void OnCollisionEnter2D (Collision2D col)
     {
         if (col.gameObject.name == "meteor1" ||
             col.gameObject.name == "meteor2"
             ) {
 
             Instantiate(meteor_d_effect, col.gameObject.transform.position, col.transform.rotation);
             Destroy (col.gameObject);
 
 
         }
 
     }
 }