This mod, specifically.

The mod I linked adds at least two enchantments which are variants of Smite, but Consecration does not detect them as being able to kill undead, so it's kind of pointless to use these enchantments in a pack which also includes Consecration.

Enchantments in question:

Blessed Edge(this is what I noticed it on)
Extreme Smite(I generally disable this, but it may be affected as well)

Alright, I'll look into it.