I am sure I remember a wearable that gave your avatar visible breath.

It was not as I remember it being just the breath. It came out around Autumn/Christmas?

I can't seem to find it anywhere! I'm not even sure if I'm just making it up or not.

You may have better luck with this question in the Human Avatars forum, the people there are pretty familiar with a lot of the wearable items on the site.

there are several flavors of Cinder Chips.