What's interesting about smelly stone and deodorizing stone?

There is a rotten stone in the Chen Ziang Reading Desk in Jin Huashan, Shehong County, Sichuan Province. It looks like a human brain, its color is bluish gray, and its weight exceeds 150kg. It looks no different from ordinary stones. Strangely, when you hit it with a hard object, the stone will suddenly give off a bad smell.

According to folklore, Chen Ziang, a famous poet in the early Tang Dynasty, was killed by Duan Jian, a county magistrate, and died in prison. The state official was furious with the civilians, beheaded Duan Jian and left the city. After a night of wind and rain, the body turned into rotten stone. Now, smelly stones have been collected and protected as cultural relics.

There are all kinds of strange things in the world. Where there are smelly stones, there are deodorizing stones. In Switzerland, Sweden and Japan, a stone that can remove body odor is produced. The appearance of this stone is white translucent crystals, much like alunite. It contains more magnesium, aluminum, potassium bromide, sulfur and so on. But it does not contain sodium and iron, so it has obvious bactericidal and medicinal effects. Pharmaceutical factories in these countries process this natural stone into a round shape, weighing120 ~150g, and put it in exquisite small boxes and sell it in the market, which is called "fragrant natural crystal stone", but people are used to calling it "fragrant stone".

Now many Europeans like to use it: before bathing, soak the stone in water, and after bathing, rub it on the sweating part of the body to achieve the effect of inhibiting sweat secretion for 24 hours. Many consumers report that fragrant stone not only has a unique effect on body odor and foot odor, but also has an obvious therapeutic effect on sores, tinea and scabies on the skin surface, and it will not cause side effects such as skin allergy.