Audio still plays after being removed?

I'm using an OnTouched script to play a sound. The problem is, once the model the sound is located in is removed, it continues to play. I need for the sound to stop playing once removed. No, PlayOnRemove is not set to true. Can anybody help with this? Here's my code...

Sound = script.Parent.Sound
active = false
function onTouched(hit)
    if active == false then
        Sound:Resume()
        active = true
    end
end
connection = script.Parent.Touched:connect(onTouched)