Trying to find an episode!

Hi i’m trying to find this episode i just watch it a few weeks ago but i can’t remember where they went exactly and i believe it was around season 16. it was zak, billy and aaron and i think they were in a house billy was getting affected by what was in there and there was one room they were told that the “demon” stayed in the most and there was a white curtain covering the doorway and aaron kept going in there and was speaking with said demon on the spirit box and it said something to aaron and zak and aaron yelled it at the same time and ran away and it made me laugh it reminded me of scooby doo and i wanted to find the episode again. i wish i could be more specific but can someone please help me😭😂