Johor state government is not ruling out the possibility that the recurrence of breathing issues and vomiting among pupils of SK Tanjung Puteri Resort in Pasir Gudang, here, could also be due to pigeon droppings in some of the classes.

Health and Culture Committee chairman Mohd Khuzzan Abu Bakar said the bird droppings had been affecting some of the school students for quite some time due to the unpleasant odour.