It's normal for people to fart. But it always comes unexpectedly. A fart sound and a fart smell can make you and everyone around you share embarrassing moments at any time. Why is a mere fart so loud and smelly! Is it true that the so-called "stinky farts don't make noise, and loud farts don't stink"? How to make farts not smelly and silent? We will answer these things for you from the perspective of causes and aerodynamics~
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