My Son's Ghost Picture

Barb Dupy from Oklahoma sent us this picture of her son. Is it a ghost with him or a vapor cloud from breath? You decide:

"This is my son, with...I a ghost touching his shoulder. He was playing in the backyard with his friend one clear night."

Is this a ghost or breath from the photographer on a chilly evening?  Breath will typically roll in front of the lens from one side or the other, and most often is brownish in color.  You decide...