Sense mob aggro by X

[Zoloe]

That's not what it does.

Scent is a method of pursuit, not detection. Deodorize was used to drop aggro after sleeping and/or gaining distance, as the monster would follow your scent after it woke up, or to find where you went. Alongside deodorize, you could drop scent trails without it by crossing a body of water, and rain and double-snow weathers remove scent in the area as well.

It did not remove blood aggro. This was a common misconception in XI.

Yes indeed! Everything you said is true, but you could use deodorize to stay undetected from undead when you were at low hp. (I think it was yellow or red hp and they would aggro even if you had sneak up)