Ghost Pictures: Hazy Ghost

"I took this photo of my niece in our living room... and when going through the pictures I noticed a haze in the background...which is our dining room. Nobody was in there at the time of the photo, yet when the photo is enlarged, a face appears in the haze. My grandmother thinks that it is my grandfather who passed away about four years ago -- he died in this house. I have quite a few questionable photos, mostly of orbs in pictures that I've taken of myself with timed mode. But this picture I felt was just a bit more mysterious...thanks for reviewing it."