Jaspurr - thanks for the good news regarding the NEFL nest...
Home from a walk with Ollie man.
Problem solving: well, the generator has been outside all night with the shop closed up tight.
No gasoline smell inside the shop.
Must be the generator.
I'll put it back inside, close it up and once again and see if the smell comes back. If so, will have to have the guy, Glen, who repaired it this spring for me come out and determine reason...