# Polluting

Adds pollution when fluid is released or burned.

Place the object under `traits` in a fluid-property file.

## Fields

| Field | Meaning and default | Range |
| - | - | - |
| `release` (Optional) | Pollution per mB released; default empty. | |
| `release.<pollution type>` | Rate for SOOT, POISON, HEAVYMETAL, or FALLOUT. | finite `f32` |
| `burn` (Optional) | Pollution per mB burned; default empty. | |
| `burn.<pollution type>` | Rate for SOOT, POISON, HEAVYMETAL, or FALLOUT. | finite `f32` |

## Example

From `data/hbm/fluid_property/aromatics.json`:

```json
{
  "polluting": {
    "burn": {
      "SOOT": 0.0002
    },
    "release": {
      "POISON": 5e-05
    }
  }
}
```