When I read fanfiction, and someone describes Castiel or other angels as smelling like “ozone,” which is apparently the smell of thunderstorms (it isn’t), I’m like hello friend, you are an excellent writer; however, I work in the printing industry around printing machines, and ozone does not smell good. Ozone smells like rancid bleach-and-burned-plastic. You don’t want to smell it, actually. You probably don’t want to lick it off the neck of an angel, either. Are you maybe thinking of petrichor? Or geosmin? Or ionized oxygen, which is what actually happens to air in a thunderstorm and which smells nice.
(Usually there is porn right after the ozone gets mentioned, and I forget what I wanted to say, but today I remembered.)