How to remove mould from damp wall & floor from sofa fab

[BarberJohnson]

I recently treated a damp/ mouldy wall that had mould growing up it by using a special paint, I noticed a musty smell still remained after doing this and when I turned my sofa upside down there is mould across the fabric underside of the sofa that has obviously come from the floor & wall - has anyone had this problem? How do you remove it & keep it away?