Having had to deal with a few dead bodies I think you're going to find that hydrated lime comes in handy. It is also handy for dealing with other biological wastes, water treatment, construction, soil stabilization, and mud control.

Lime really helps with the smell and mess. Well limed the corpses tend to stay drier and be far less runny. More mummy, less infernal puddle.

Also, the first thought many have is to put bodies in plastic. This works for a few hours, and can be handy short term, or if you have refrigeration, but the plastic holds in moisture and you can end up with the worse soup imaginable. Wrapped in adsorbent and permeable material the water evaporates and after an initial royal funk, while the insides stew, the smell dissipates as the corpse dries out.