2 of us, 2 washes, occasionally a third.
I make a conscious effort to do as little clothes washing as possible, it is contributing to global warming, and contributing to the water shortage in this country.
While I do rmemeber some people smelling in my childhood, genrally speaking everyone round me was clean as was the house and there were no clothes or dirt odours. Yet this was achieved with a fraction of the personal and domestic washing we do these days.
I spot clean, I air clothes and bedding, I change intimate underwear daily - and I wash at 60 degrees to ensure that all bacteria are destroyed and clothes.
If you have to add extra chemicals disinfectants to lower temperature washes to eradicate smells and bacteria, then the solution is to abandon the corrosive and dangerous chemicals, their manufacture will consume any energy you save by not turning the washing machine temperature up, not to mention the dangerous waste manufacturing them produces.