Joke Collection Website - Blessing messages - Why is the sound when we fart "poof ~ ~" rather than other sounds?

Why is the sound when we fart "poof ~ ~" rather than other sounds?

Because when the airflow is discharged through the anus, if the anus is closed, it is similar to this sound. When the protein content of food is high (such as meat), the contents of hydrogen sulfide, indole and fecal odor in fart increase, and the fart has obvious odor; When the starch content of food is high (such as potatoes), the carbon dioxide content in fart increases, and the amount of fart increases obviously at this time. Because the increase of carbon dioxide is obviously greater than that of hydrogen sulfide, indole and dung odor, and when the air pressure increases, the airflow speed of fart increases, and the sound of fart becomes louder, while carbon dioxide has no smell, so there are sayings that "fart is not smelly, fart is not smelly" and "fart is not stuffy".