Exuding sexuality is something that can only be done when there are sexually attracted females around. No females, no sexuality.
Sometimes I would have trouble getting rid of my sexual tone when I talk to women because, well, I was doing it to all of them. I couldn't help it. When women are vibing with you on a sexual vibration, it's like all they can hear is your voice among all that ambient noise wherever you may be.
TBH sometimes it's hit and miss, sometimes I wouldn't get the sexual vibe going for a whole night. But when a girl comes along who is vibrating on that same vibration, I try to identify that. And it's not hard. Women are very sexual in nature.
From the tone of your post though, I am guessing you don't have any real confidence in your own demeanor. If you want to get confidence, well I can only recommend that you learn the things that you don't know. If you are unaware of women's crazy instincts, just educate yourself on that. Sometimes it's better to say less than is necessary and to just soak up the environment.
I can tell you I've seen Don Juans (not from this forum) who game with their mouths, yapping all the time and making the women love it, and there's guys who don't say much - the strong silent type, who just take over a chick's life for 1 or 2 days and make sure they get the fvck on one of those days.