Small gas leak

A very  small gas leak  has been discovered on  2014 nuevo after gas test , it has been confirmed as on fridge pipe route, that  runs from wardrobe on off knob to fridge and barbecue point , no leak can be detected with spray or sniffer on any accessible joint , any ideas what could leaking and what route the gass pipe takes fron on off knob to the fridge   thanks ,

Whoever is doing your gas test should be more than competent at locating and fixing the problem. If they have put you in a situation where you feel you need advice from others get a new gas engineer. Don’t want to sound harsh, but it’s your safety and others. I’ve seen an oven destroyed by a tiny gas leak.

I would find it more helpful if someone could simply answer the question.

No , I Am well aware of the dangers of gass that is why I have it professionally   tested ,

My gass leak has been found  it is the valve located at the rear of fridge  ,that turns the gass off and on when on auto setting , booked in when parts arrive

New fridge valve fitted and retested ,no leaks