Why do loud farts not stink, and stinky farts not make noise? How can you fart without smelling or making noise?

Ending easter egg ①: I just want to talk about some little-known facts about farts: ① Boys may fart more than girls. Scientists did a strange survey and found that: men fart 2 to 53 times a day, an average of 12.7 times. Women fart 1 to 32 times a day, an average of 7.1 times. ② Girls' farts may smell worse than boys. A pathologist named Mary Roach conducted a study and found that: women produce more hydrogen sulfide during the digestion process, so their farts may smell worse. ③ Any farts you hold back may turn into burps. After being held back, the farts will be absorbed by the intestinal wall and enter the blood. After a tour in the body, they will reach the lungs and eventually become burps. ④ People will fart after they die. A large number of bacteria decompose human tissues and produce gases. These gases gradually expand and may break through the restraints of the anal sphincter, causing the corpse to fart.

Ending Easter Egg②:

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Koko... From my personal experience, if you eat too much protein powder, you will really fart. Friends who work out should pay attention to this.