Water in the paddling pool during washing - clogged drain?

Hello, today I had a rather strange situation, the washing machine was turned on and it was throwing out water, at that time in the shower cubicle it suddenly started to gurgling and a little water flew into the cabin, I have had a washing machine and a shower cubicle for 10 years and I have never had something like this. Today, when I entered the bathroom, I could smell sewage and the smell of "sulfur". Is it a clogged drain in the shower tray and the spiral will help? I regularly clean the siphon from the top of the shower tray and now it was like that ...

Yes, it is very possible.
The pipe behind the connection point between the drains from the washing machine and the shower tray is rather clogged.
Over 10 years, sewage pipes often collect thick and greasy deposits from soap, dirt, hair and all kinds of crap. If you have thin pipes for this - 50's, for example, it is a relatively low thickness coating, it greatly narrows the diameter of the pipe and makes drainage difficult.
Probably the same thing happens when you drain the water from the shower tray, but you didn't notice because the water was flowing into the washing machine pipe.

The spring is the minimum when plugging it in. It won't always help. Sometimes it is necessary to dismantle pipes or open an inspection and thoroughly wash, often under pressure, the sediments blocking the drain.

Only ... the washing machine and the paddling pool are on both sides of the bathroom, it is not possible to dismantle the pipes or open the inspection ...

The testimonies are slowly becoming more and more extensive - and what is closer to the sewerage riser, washing machine or paddling pool ???

WSRH wrote:

I have had a washing machine and a shower cubicle for 10 years and I have never had anything like it.

How many years have you lived with a woman? Maybe explain to her (ask politely) to brush her hair before stepping into the shower.

r103 wrote:

The testimonies are slowly becoming more and more extensive - and what is closer to the sewerage riser, washing machine or paddling pool ???

paddling pool

All that's left is rubber gloves, a large bowl or two, a mop at the ready, and a hydraulic spring in your hand.
Disassemble the siphon under the shower tray and move the whole day towards the vertical.

How do you have your washing machine plugged in? Maybe you will reach the spring faster from this side, all the sewage holes lead to the main pipe, paraphrasing the old saying. Here you have at least two entrances behind which there is a potential blockage.