when a stopped particle system gets stopped it plays.,When a stopped particle system gets stopped again It plays??

in the code below When I smash an obstacle while still being in the air the particle system gets turned on instead of staying stopped

void Update() { if (Input.GetKeyDown(KeyCode.Space) && isOnGround && !gameOver) { playerRb.AddForce(Vector3.up *jumpForce , ForceMode.Impulse); isOnGround = false;

         playerAnim.SetTrigger("Jump_trig");
         dirt.Stop();
         playSound.PlayOneShot(jump);
         
     }




 }
 private void OnCollisionEnter (Collision collision)
 {
     if (collision.gameObject.CompareTag("Ground"))
     {
         isOnGround = true;
         dirt.Play();
     }
     else if ( collision.gameObject.CompareTag("Obstacle"))
     {
         Debug.Log("Game Over");
         gameOver = true;
         playerAnim.SetInteger("DeathType_int", 1);
         playerAnim.SetBool("Death_b", true);
         explosion.Play();
         dirt.Stop();
         playSound.PlayOneShot(crash);,When the player smashes into an obstacle while he is still in the air the particle system gets turned on instead of staying stopped..

void Update() { if (Input.GetKeyDown(KeyCode.Space) && isOnGround && !gameOver) { playerRb.AddForce(Vector3.up *jumpForce , ForceMode.Impulse); isOnGround = false;

         playerAnim.SetTrigger("Jump_trig");
         dirt.Stop();
         playSound.PlayOneShot(jump);
         
     }




 }
 private void OnCollisionEnter (Collision collision)
 {
     if (collision.gameObject.CompareTag("Ground"))
     {
         isOnGround = true;
         dirt.Play();
     }
     else if ( collision.gameObject.CompareTag("Obstacle"))
     {
         Debug.Log("Game Over");
         gameOver = true;
         playerAnim.SetInteger("DeathType_int", 1);
         playerAnim.SetBool("Death_b", true);
         explosion.Play();
         dirt.Stop();
         playSound.PlayOneShot(crash);