Girls, when having sex for the first time with a new partner, have you ever been self conscious about how you "smell"?

Weird question, I know. I ask, because when my wife and I had sex the first time, she told me she was worried she may have not been "fresh", mainly because it was very spontaneous and it was after we had been out all night. To me, she seemed very relaxed, as did all the other women I've been with, so I'm just wondering if it's common for other girls to feel that way but you're just good at hiding it. lol