I don’t think I emit them.  In all my thirty years, I think I was mistaken for being gay once.  I was laughing at my friend’s joke, turned my head while I was still smiling, and made eye contact with a big burly dude who had at least seventy pounds of muscle on me.  He scowled and told me he didn’t swing that way.  When he proceeded to move faster, I ducked.  I thought he was going to knock me the eff out.  But he didn’t, he just wanted to get out of there.  I guess he was as afraid of me as I was of him, but for different reasons.  Good times.