Source:
https://scmp.com/article/225433/boys-illness-gives-his-mother-away

Boy's illness gives his mother away

A mainland visitor was found to have overstayed by more than 10 days after she called an ambulance to a home in Yee On Street, Kwun Tong, when her six-month-old son became ill.

The woman, 25, said her son had fallen ill while having his bath in the bedroom, with the windows closed and a heater switched on. Ambulance workers blammed bad ventilation.