Sorry that happened to you and your son.
Oof that reminded me of the family dog. My husband and I tried burying her in the backyard 4 or 5 feet. Put lye over her and everything to mask the smell. I guess it wasn't deep enough because a week later a coyote was digging her up 😵 the smell and imagery
.. Awful... usually my dad does the burials. I learned my lesson. Never bury anything unless you know what you are doing. I was traumatized.