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enter image description hereI just replaced the toilet, sink, and faucet in my bathroom and I now smell sewage from the sink. Everything is basically the same, although I had to get a drainpipe extender - still have p-trap though. Ideas?

Added pic but let me know if the angle is what you need and thank you!

Follow-up: since the sink and faucet I installed in the other bathroom don’t have this issue, ordered those exact products and going to reinstall to see if this remedies issue. Did not have to do the drainpipe extender on the other one and it was more exactly centered. Thanks for the thoughts and will update after I do that.

KathyJ
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Presumably (we can't see how without a picture, but we can tell what from the stench reported) you've screwed up the trap venting or turned the trap into an S-trap that siphons dry in your rework and adding an extender. Or you simply have a leak on the "drain" side of the trap permitting gas to pass.

That needs to be fixed, either by correcting the drain layout or adding a mechanical vent in an appropriate location (air admittance valve, often called "Studor" which is a brand name for one maker.)

Ecnerwal
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I had a plumber look at this and he said my work was just fine and that I just added an unnecessary gasket but wasn’t an issue. So… still have smell and I’m thinking I maybe it was venting a little below the sink before and now that I have it so sealed up, it’s all coming out the top? Just can’t spend more mental cycles on this so thanks for the input!

KathyJ
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