THE SHORT ANSWER
A dry trap, poorly sealed fixture, venting problem, or sewer defect can let odors into a home. Run water in an infrequently used sink or floor drain first; if the smell remains or is strong, arrange an inspection. If you suspect natural gas instead, leave the building and call the gas utility.
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For more context about this type of plumbing issue, read our related Oklahoma City guide.
Read the related VIP plumbing guideEducational information, not a remote diagnosis. The right repair requires an onsite assessment. Plumbing conditions, safety concerns and local requirements vary. Stop using unsafe equipment and seek qualified help for gas, sewage, electricity or flooding hazards. See how we develop and update our homeowner guides.
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