Anyone know what happened in Ilford Primark?

an incident happened in Ilford primark last week customers and staff were feeling dizzy and had headaches and the Paint fumes have came through the building. They made 11 people unwell. There were a lot of people getting out and the shop was so busy ambulances came and help evacuate the building anyone know what happened i was gonna go shopping in Primark is it safe to go there or not