The answer to 'my leak repair smells bad' is that a smelly leak repair can be caused by a few common issues. One of the most likely causes is that the leak is allowing sewage or other foul-smelling water to seep into the surrounding area. This can happen if the repair was not done properly or if there is an underlying problem with the plumbing system. Another potential cause is that the materials used to fix the leak, such as sealants or adhesives, are giving off an unpleasant odor. This is more common with lower-quality or improperly installed repairs.
In either case, the best solution is to have a professional plumber inspect the repair and diagnose the root cause of the smell. They can then make any necessary adjustments or complete a more thorough repair to eliminate the odor. Trying to DIY a smelly leak repair can be tricky and may end up causing more problems, so it's generally best to call in an expert.