Ikea Siphon Atlant venting/air release problem. It smells bad

Hello again
I have rescanned the photo in the photo gallery (I can't do it any other way at the moment), I think this is where the problem lies, the inlet into the drain should be deeper. maybe
best regards bergpriv

How can I implement this suggestion? The drain that goes into the back wall is (relatively) fixed. I could buy a shallower sink and then move the upper part upward? If I interpret your sketch correctly, 2-3 cm should be enough. Did the installer place the drain too high? Was that a mistake by the craftsman? Actually, the slope is hardly achievable for me. Or did I misunderstand that?

Best regards,
Toll

What have I done. I went to Ikea and invested once again in an Atlant siphon system. I gave up my oh so clever space under the sink intended for recyclable waste and properly installed the new package. Pictures attached. And it did not help, unfortunately it still smells. I will now really call in the professional. I give up, I strike the sails. I let myself be hired. Yours, Toll

A sensible solution would be to build a second siphon. Ideally at the wall outlet (this is usually an HT40 or HT50 pipe socket), using four 90° elbows (HT40 or HT50 depending on the wall outlet) to build another siphon. You can connect the four elbows in such a way that a U-shape with siphon effect is created. At the end, connect the flexible connection hose from the atlant siphon. This way you have enough buffer, because first the water from the other siphon is drawn, or the water from the atlant siphon is pulled into the other siphon, so that a water trap is present again.

I am sure with 90% probability your problem would be solved, four HT pipe elbows cost less than 10 euros.

Problem solved. It happened that I contacted the landlord. He showed the pictures to his installer and explained the background. He then said all right, a vent has to be installed beforehand. Ikea? Fine, then I have to order it separately. I did, it arrived, was installed, and that was it. Took 10 minutes. Now it no longer stinks, but you occasionally hear the suction noise. But no more bad smell. And less space under the sink. That’s it from my side. Many thanks for the tips.

Your Toll

I have exactly the same problem. As soon as water drains, it smells terrible from the drain. What exactly do I need to buy? I can't imagine what an "Entlüfter" is.

And who was to blame for the mess now?

That is a question that I would still be very interested in.

Happy holidays.