So over the Xmas week had several rounds of relatives thru the house and staying over, and had one VERY nervouse aunt who said that she smelled gas or LP out side. Well after everyone left and I had time to recover from a hangover or two I had to get to the bottum of this problem.
Called out the gas man to check for leaks, DING DING DING, we had a winner - no not a line or fitting leaking; the control valve for the LP back up generator had frozen (temps in MN the last 2 weeks averaged -10) and was leaking. So I had to break out the heat gun (electric, not gas) and thaw out the valve and cook out all the moisture.
Now I know this doesn't sound all that scary, OK gas leaks are danagerous not going to lie; I forget to mention OWB is less than 15' from generator
THANK GOD I DIDN'T BLOW UP on one of the hundred times I have run out to fill the OWB in the last month.