The smell is of the sewer, which can be due to sewer trap plugs or dried traps. For dried traps, run some water to recreate the barrier. If the smell still persists, you may require to replace the plug. And if nothing is working, call for the same-day plumbing to check your drainage system. Our experts will reach out to you in an hour with all the required tools and equipment to locate the root cause of the problem and repair it precisely.