Hi from retired Englishman in SW France,
Bad odours could be coming from a few places.
- the plumbing u-bend of the washer's room or
- the fact that there is 'foul' water being left in the drum.
- No washes at 90 degree+ !
I would suggest checking the plumbing u-bend for trouble first, then following the notes on checking and cleaning the drain filter and the drain pump to ensure there is nothing 'obnoxious' hanging around the two of them! Finally run the occasional 90+ wash to kill bacteria.
Here are my complete and general
guidance notes for checking both the drain motor filter and the drain motor
If you are unsure where the filter is, it is often behind the front lower (kick) panel (or in some machines at the rear in an awkward position!). These panels are either held on by (plasic) screws or will just pull off. Most filters are held in by a round cover/knob. Sometimes the filter will not come out with the cover and you will have to persuade it to come out to play.
REMOVE POWER AND ENSURE YOU HAVE A WATER RECEPTACLE/RAGS TO SOAK UP THE WATER WHICH IS BOUND TO POUR OUT (alternatively use a wet vac as sensibly suggested by VinnyB1234!)
It's surprising what people have found in theirs! It is always worthwhile checking it on a regular basis.
Now- whilst the filter is removed it is normally possible to see the drain motor and ensure it is not jammed by a foreign object such as a needle or a toothpick. It should be able to be turned by hand/finger- the power IS OFF!
At this point it is also possible to test if the motor works. No clothes or water in the machine, select a spin cycle and put the power back on. You should be able to see the motor turning at some point, possibly straight away. Using something suitable like a glove see if it is easy to briefly slow the motor down. If it is easy then the motor is malfunctioning.
If this has assisted you please consider a 4 thumbs up for the rating.
Thanks and good luck,