Sounds like you are saying you have tried manual spraying or oil on a steamhead during steam sessions but at the hotel it just existed as if it were magic. Am I on the right track?
Well the magic is the AromaMist Essential Oil Delivery system that atomizes the Eucalyptus oil into the steam piping so that the steam & oil enter together.
There is a commercial and residential version of this outstanding aroma system.
Check out Home Aroma System