Chemical Pollution is a status effect added by Misty World.
This parameter shows the degree of chemical contamination on the player's body. It increases in contact with fog, acid, or acid rain without adequate protection.
Since version 18.104.22.168, the size of the effect can be changed with the command:
Starting at 20%, chemical pollution will inflict damage to the player. The greater the pollution indicator, the more likely it will be damaged.
Chemical pollution can be washed off in water or in the rain, but using Soap is more effective.