Are you really that stupid, or just pretending to try to throw out a zinger? She's literally talking about how folks are used to smelling gas as they fill up their tank and you lame asses are deliberately trying to spin it as something else. The fact she's literally laughing as she makes the joke at the end of the line is your dead give away. ""And there's no sound or fumes. So for all of us who are used to filling our tanks, you usually can smell it, you can hear it, you can hear the guzzling sound. So how do I know it's working?"