The stench might not bother Alastor but it is making Maedhros gag.

The great spidershaped thing that is the Ungoliant is starting to realize she might have picked a fight that is beyond her. Or at least beyond this conjured up dream of the memory of her. She hisses and makes one last swipe at him before skittering backwards as fast as she can. Hatred and a bit of fear shining in the dark pits that are her eyes.