Sulphur dioxide (SO₂)

Sources of sulphur dioxide

Sulphur dioxide is a colourless gas with a strong odour. It’s mainly produced from:

• burning petrol or diesel in vehicles
• gas boilers
• coal burning power stations
• commercial manufacturing
• food manufacturing

Health effects

Short term exposure can cause irritation to the:

• eyes
• nose
• throat

Long term exposure at high levels may lead to:

• reduced lung function
• altered sense of smell
• increased respiratory infections