demiurge1138
Inventor of Super-Toast
The former--increasing the HD of the base undead.
Are we giving them stench like a troglodyte, or is it still just going to panic animals? If the latter, we should make it unnatural aura (or just call it noisome odor or something to differentiate it from both).
Sounds about right to me. Do we want to give animals a save against the unnatural aura? If so, do we want animals with scent to take a penalty to the save?