Wrong. A smell if if gas was reported to an RGI. You tested and found no leak after ECV. Do you not understand the nature of an external gas escape? The smell can come and go depending on ground conditions. Just because you could not smell it at the time of visit does not mean it was not there. You acknowledged as such when you returned at least once .Fair questions,
Smell nowhere near any source of gas , client side of meter.
Smell nowhere near street or incoming service
It made no sense, whatsoever.
I could not smell gas and most staff could not smell it, just a couple of employees could.
Massive risk ? - Not in my professional opinion
Op was about how other professionals deal with no detectable smells.
It seams we shrug our shoulders and say not my problem.