References:
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Silkworm excrement pillow: According to medical research and analysis, silkworm excrement contains up to 83.77%~90.44% of organic matter, including Ye Yuan, phytosterol and free amino acids. Silkworm excrement pillow can improve eyesight, nourish eyes and strengthen brain. And newborns are all lung fire. Using silkworm excrement pillow can refresh the mind, cool and stop sweating, and remove summer heat and anneal. It can dispel wind and remove dampness, improve hearing and eyesight, regulate stomach and remove turbidity.
As for the bad smell, it may be the production process of the bought goods themselves.