Second AudioClip won't play

I just started game developing and am making a 2D space shooter. I'm having it so when you shoot an enemy ship, it'll play a hurt noise until it dies after 3 hits, and then I want an explosion sound. Right now, the hurt noise is playing, but when the ship gets destroyed, it won't play the explosion sound. I have no idea why it won't work because the code is basically the same for both sounds so why would the first one work but not the second. Any help would be great. Here's the code:

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class EnemyController : MonoBehaviour {

 public AudioSource audioSource;
 public AudioClip explosionClip;
 public AudioClip owClip;
 

 private int health = 3;
 // Start is called before the first frame update
 void Start()
 {
     
     audioSource = GetComponent<AudioSource>();
     
 }

 private void OnTriggerEnter2D(Collider2D collision)
 {
     if (collision.gameObject.CompareTag("Bullet"))
     {
         audioSource.PlayOneShot(owClip, 1f);
         Destroy(collision.gameObject);
         
         health--;
         if (health <= 0)
         {
             KillSelf();
         }
     }
 }

 private void KillSelf()
   {

     audioSource.PlayOneShot (explosionClip, 1f);
     Destroy(gameObject);
     

 }
     

}