Thanks for making me dig deeper.
I find this very dubious, I've never had a problem smelling natural gas whether it's piped into my stove directly or from a full tank attached to a barbecue. It's not intended for smelling when the gas tank is low AT ALL.
I may stand CORRECTED here.
It was The Gas Guy about 25 years ago when I first had a gas stove who told me that if I were to ever smell a STRONG ROTTEN EGG smell when lighting the stove it meant that the tank was getting LOW and I should call to have it filled.
He told me that the Odor Additive (He never said it was Mercaptan.) was heavier than the natural gas & collected at the bottom of the tank. So when the tank was getting LOW on Natural Gas the concentration of the additive would be much HIGHER and therefore be VERY STRONG SMELLING when the tank was almost empty.
Yes, you CAN smell it in when a tank is full, but it is PUNGENT when the tank is low. (I've never had a House FULL of gas to know what that would smell like first hand.) I just know that when using the stove and the tank is full I don't even notice the smell. But when the tank is LOW, it even smells to "me" when it is lit. I usually can barely make the wait for them to come fill the tank to get rid of that smell.
I've never had a Main Gas Line. Only Tanks on my property.
I also prefer to cook on Wood Burning Grills (Oak, Hickory, & Mesquite are my preferences.) and have only owned a few Gas Grills in my life.
So, here's some further reading for anyone interested.
Methanethiol - Wikipedia, the free encyclopedia
Excerpt:....."Since natural gas and propane are colorless and odorless, a small amount of methyl mercaptan or ethyl mercaptan is added to make it easy to detect a gas leak."
What Is Mercaptan? - Columbia Gas of Ohio
Excerpt:...."Since natural gas is colorless and odorless, we add a harmless, non-toxic chemical that makes it easier to detect a gas leak before it can create a hazardous situation. The chemical, called mercaptan, smells a lot like rotten eggs"
Natural Gas FAQs - City of Lake City
What should I do when there is a strong gas odor in the house?
1. Leave the house immediately.
2. DO NOT make calls from your home. Phones are capable of producing a spark, which could start a fire or explosion.
3. DO NOT light a match or other combustible material. Likewise, DO NOT turn any light switches on or off, and DO NOT plug or unplug electrical appliances such as a television or vacuum cleaner. These activities also can produce a spark that could start a fire or explosion.
4. Do not re-enter the house until the gas company finds the source of the leak and corrects it.
P.S. My FARTS never STINK. So I'm unarmed in a FART War. Have been all my life. Maybe that's why I don't really notice the Mercaptan until the concentration is high. I have not been acclimated to Fart Odor from myself over the years.
Lulz