Most plumbers wont mess with the septic tank. We deal mostly with components inside the house. Did you have a vent pipe in the yard (often looks like a candy cane made of PVC) before the repair but not after? If all he did was replace the line it shouldn't cause a smell inside the house. All plumbing fixtures inside the house should have properly functioning traps. Those traps would create and maintain a water seal against the sewer gases. You should have at least one vent through the roof to equalize pressures within the drainage system. This prevents positive pressures within the system (caused by fixtures discharging into the lines, ie toilet flush) from pushing gas out through the traps, and negative pressures (the waste in line will pull air behind it like your finger over the end of a straw) from sucking water out of the traps.
Headquartered in Collin County Texas, Crown Plumbing Service is a family owned and operated corporation that remains committed to old fashioned values of professionalism, dependability and affordability. We realize that regardless of the magnitude of your repair, when you need plumbing service, urgency, accuracy, and integrity are critical to the success of your repair. 

Rooter Plumbing

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