I'm not superstitious. I'm a very skeptical person.
BUT I have dealt with ghost farts that have made me think otherwise, even if it was only for a minute or so. It's supposed to be that when you walk into a cold spot, you're encountering a spirit, but they fail to mention what happens when you encounter a totally strange smell. I'm not talking dog poop, or drainage. I'm talking about a straight up fart, except you didn't do it, and there's no one in sight.
Bizarre. Another world mystery.