 Well, what do the following have in common? A white cloud or mist, the sound of a roaring, hissing, or whistling, and the smell of rotten eggs. Well, according to the experts at New Jersey Natural Gas, these are all signs of a dangerous gas leak. So if you are working in your yard this summer, you need to be able to recognize the signs of natural gas leaks. These include the smell of the rather distinctive odor of rotten eggs, or seeing a white cloud, or fog, or bubbles even in standing water, or