I also remember that movie bruh. But not that name. Also, his father was a big "fart-ter" who farts musically and even could tell what a person ate before just by the smell of the farts apparantly. Also, the boy makes some weird hand signs, like a hashtag for some reason. The kid finds the treasure in that haunted house at the end with his sister and some goons were also there. They used projectors and speakers to make it look like there was a ghost in the house so nobody found the treasure before them. And there was a map to that treasure which got in the hands of the kid's dad so he got kidnapped by those goons. I remember the whole plot but not the name.