I ran across some photos in our Flickr group that I really like from Shabnam – Morningdew Photography. I was the second person to describe them as ethereal. The photographer used Exposure with some minor adjustments in Photoshop. She mentioned the platinum preset, which is probably the one in Black & White Film > Effects > High Key – Platinum Toning (warm).
P1150450-e3-p

My guess is that the version below probably uses the setting High Key – Glow & Sepia Tone. That setting uses the halation feature in the IR tab to make bright areas glow.
P1150450-e3-sep

Here are a few more that I like. Join the Flickr group and stop by for more inspiring ideas!
P1150280-e3-sep
IMG_5580-e3
IMG_5254-e3-sep