By Simon Murphy A family is living in a damp and mould-ridden flat while the boss of their housing association enjoys a £3million pad. Jai Waller, 20, blames the mould for hospitalising son Zayn, two, for 12 hours with severe bronchiolitis and now fears for the health of son Vincent, born last month. It comes after a coroner ruled Awaab Ishak, two, died in 2020 in a flat in Rochdale, Gtr Manchester, due to exposure to black mould. Jai’s flat is owned by The Guinness Partnership, one of the UK’s biggest social housing providers. Boss Catriona Simons, on £300,000 a year, has a five-bed pile in a…