#24 Phantom Popcorn
My daughter and I were on the couch one day when she was younger and we heard the sound of popcorn, like from the microwave. It wasn’t a constant popping, but one or two pops every ten seconds or so, then the entire living room filled with the smell of buttered popcorn. No one was making popcorn, the microwave itself did not smell like popcorn, and the smell was only in the living room. I went as far to open the heating vents to see if there was a rogue bag of popcorn in there. If it was just the smell and not the sound or vice versa I would easily explain it away, but it was still one of the strangest events.
Credit: 666lddhunter