Illustrative image of the relevant drainage feature or investigation.
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If investigation or repairs are needed, you can use MyJobQuote to request contact from local drainage tradespeople.
Get quotes from local drainage specialists ↗Start with the likely route
An empty trap, faulty pan connector or poor waste ventilation can admit drain gases. Notice whether odour follows flushing, running water or a long period without use.
Where possible, establish whether the trouble starts at a local fitting, a branch pipe or the underground run. This distinction can prevent an unnecessary survey of the whole system.
Don't overlook another explanation
Cleaning the room will not repair a failed drainage seal. If the visible problem changes after rainfall, flushing or use of a particular appliance, record that sequence so the contractor can test the right part.
Questions to put to the contractor
A suitable tradesperson can check the trap water seal and pipe connections. Ask what will be done first, what the inspection cannot tell you and whether the quotation includes reporting and reinstatement.
Before you agree to major work
Get the proposed work and its limits in writing. For costly repairs, ask for photographs or survey evidence locating the defect and consider a second quotation. Where the affected run may be shared or adopted, check ownership before arranging privately funded work.