Is soundproof cotton harmful to humans?

[LaMalachi]

Using non-toxic and harmless soundproof cotton sold through formal channels will not cause harm to the body; however, if irregular soundproof cotton is purchased and used, it may release harmful gases during actual use, thereby affecting the health of vehicle occupants. Soundproof cotton has excellent thermal insulation effects. When pasted inside the car hood, it can effectively prevent the high temperature of the engine from directly transferring to the hood, thus protecting the surface paint of the hood and avoiding foggy vision caused by steam on rainy days. Soundproof cotton is made of porous fiber materials, such as polyester fiber cotton, centrifugal glass wool, rock wool, mineral wool, plant fiber spray, etc. The soundproofing mechanism of soundproof cotton is due to the large number of tiny interconnected pores inside the material. Sound waves can penetrate deep into the material through these pores, converting sound energy into heat energy through friction with the material.