TriggerMeshRenderOff.cs

using System;
using UnityEngine;
public class TriggerMeshRenderOff : MonoBehaviour
{

    public AudioSource audioSource;
    public AudioClip audioClip;

    private void Awake()
    {
        if (audioSource == null)
        {
            audioSource = new AudioSource();
        }

    }

    private void OnTriggerEnter(Collider other)
    {

        OffMeshRenderer();
        PlayBasicSound();
    }
    // For now, just make stuff public , if your unsure of what your doing. 
    // Forgive me Jeff. 
    // However, imagine two friends sharing details about a vacation. 
    // Some things, like you getting a parking ticket should be private

    private void GotParkingTicket()
    {

        Debug.Log("You got a parking ticket, no one else cares");
    }

    // But you'd want to talk about the movie you saw
    public void SawSpaceJam()
    {
        Debug.Log("Saw space jam it was fun");

    }

    // Returning varibles to other classes, maybe you want to send a postcard to a friend
    // 
    public string SendPostCardToFriend(string friendName)
    {

        return "Hi " + friendName + " we are having fun.";
    }
    public void PlayBasicSound()
    {

        audioSource.PlayOneShot(audioClip);
    }
    public void OffMeshRenderer()
    {

        GetComponent<MeshRenderer>().enabled = false;
    }
}