#23 Dead Bodies Vent Out Foul Smell
Speaking of creepy things, the human dead body vents out foul smell after death. While it can be pretty embarrassing for the departed soul, it is pretty scientific.
Once the body dies, the bacteria in the stomach causes the digestive system to decompose. The building pressure causes the gas to gush out of all openings, making it really uncomfortable for the embalmers to perform the last rituals. Embarrassing but true.