We have an electric washer & dryer, so we knew it couldn't be that, although there is a gas hub thingy back there. No readings of a gas leak back there. In the garage? No. Even if you have an electric stove, there is probably a gas hub thingy back there too. Let's look behind your stove.
GASP!!! I probably sucked all the air out of the room when I did that! Now, I'm a pretty good housekeeper. I can't stand clutter and I like it clean. However...how often do we pull out our stoves to clean? How often in our busy lives do we think about the places that we can't see???
Of course, I was horrified! "Oh my God, I'm so embarrassed!"
"Hey, it happens ALL THE TIME. My house too!"
Lucky for me, he had to go check other areas in the house, maybe on purpose, so I had time to get out the vacuum, cleaner, scrubber, mop, and a knife (no, I'm not kidding) to scrape off something that had dripped down the side of the stove against the counter! By the time he got back in the kitchen the stove sparkled, the floor shone where the stove had been, and it felt like a breath of fresh air, like I had been breathing all that dirt or something. Yuck!
After he left, no gas leak anywhere by the way, I had Hubby pull out the refrigerator too. No way I was going to have a glich with the fridge and have someone come over and pull that out too! Aarrg! Nasty!
I just pass this along to save many of you the same horrific embarrassment that I experienced this morning. No whining! You've been warned! Ha!