I have found no evidence of Odella in either Beluslan Fortress or at Kidorun's Campsite.

But I have an idea, Player.
So far, we have only asked the people we met during the day about the Odella.

But if someone is plotting and secretly trading or transporting the Odella, what time would they do it at?

In the dead of night of course!

Kistenian, a Daeva of Flame, is spending day and night rebuilding the Icy Kurngalfberg. He must have found out something.
Player! I've been waiting for you. I knew you'd visit me some day.

You need some information from me, don't you? You can ask me anything.

But I expect a little something in return.
Odella? Do you mean the medicinal herb that grows by absorbing Aether?

In cold areas like Kurngalfberg, the medicinal herb Odella is used for different purposes.

I'm not sure if they were loading Odella, but a while ago I watched the Quairerk Merchants transporting suspicious goods.

I could smell the scent of Odella in these carts. Perhaps you should check out the Quairerk Merchants?

That's all I can tell you about it. Now it's my turn.
I don't know how long I've been trying to thaw the Icy Kurngalfberg. This city has lain buried under a thick sheet of ice for 700 years.

If Esekiel had not rebelled against Ereshkigal so thoughtlessly, it certainly would never have come to that.

Esekiel was an excellent priestess, but in other areas her skills left a lot to be desired. In the end, her pride led to the downfall of an entire city.

The Daevas of Flame are now trying their best to thaw Kurngalfberg, but it is no easy task as the frost reaches deep into the ground.
We Daevas of Flame need help to thaw Kurngalfberg.

All our hopes rest with Elim Elder Kasadrasil.

He possesses the power of life.

But a strong spell has put Kasadrasil into a deep sleep.

We somehow need to wake him up.

We need his help to thaw out the city of Kurngalfberg.

These Elim essences can be used to awaken Kasadrasil.

Take them to the The Sacred Orchard and wake Kasadrasil.
So the Quairerk Merchants transported goods which smelled like Odella.

We can find out more by interrogating these Shugos.