The gas itself is odorless, but around many wells, there are odors, but it's not the natural gas you're smelling. On the other hand, sometimes you have the odor without the gas. When I was doing gas leakage surveys, I remember one rather large station where they were pulling their gas from the Tennessee pipeline and adding the odorant. The pipeline was running 975 psi at the time with gas without the odorant. Anyone getting within 50' of that facility would have sworn they had a bad leak, just from the odor, but in reality there was no gas leak at all; just a little from the odorant that was being added.