We are drying wet laundry within an enclosed open plan living area without ventilation (eg. no windows open in the winter) but should we be worried about the build up of bacteria?
Condensation remains arguably the largest cause of dampness in indoor areas, and can eventually lead to the growth of mould. If left unaddressed, condensation can also damage property by fraying curtains, peeling wallpaper and creating a generally musty environment.
The growth of fungi like mould, is probably a greater risk to the health of those living there than bacteria build up. There are some things you can do to try to reduce the risk of bacteria or fungal spores forming. They include dehumidifiers, electric clothing racks for fast warm drying of clothes – but of course, involve investment. You can find ideas here.