Luckygirl3
I am wondering if there is something amiss further down the system. Drainage out here is bit rudimentary.
I don't always leave the door open as it gets in the way of standing at the sink.
I have sent off for some dishwasher cleaner on my next Tesco order. I did not know there was such a thing. Fingers crossed.
I've never noticed ours smelling, or the washing machine.
It's possible that the smell may be coming up from the drain, not your fault, it could be from further down the system; can you ring the Water Board and enquire?
We had problems a few years ago with the kitchen sink drain and the basin in the downstairs loo and called a plumber in the end. Apparently it was due to heavy rains he said 🤔
Not that we have heavy rain at the moment!
I used the white vinegar and bicarbonate of soda method (a cup of each down each drainhole) and it seemed to work.