Adults will have respiratory and lung diseases. The most obvious thing is that the blood will absorb these harmful gases, leading to skin aging and yellow and black face. After doing it for three months, I found that the urine was always yellow, and later it was detected as hematuria. The doctor said that renal function may be affected in the later stage, resulting in sperm deformity or loss of activity.
Therefore, many factories require working managers and people with children for more than two years, so in case of disputes in the future, the factory can say that your kidney was damaged elsewhere before!