A number of staff and customers at a Christchurch shopping centre were treated for nausea following fumes from a concrete sealant nearby.
Ambulance services were called to the Tower Junction Shopping centre in Middleton about 12.47pm where 20 people were treated for nausea and light-headedness, a St John Ambulance spokesman said.
The patients were treated at the scene and no one was taken to hospital.
Southern fire communications shift manager Tim Reynolds said the fumes were affecting a number of people in the store.
Three fire engines and a Hazardous Substance Unit also attended the scene.