Pansexual is generally defined as being able to be attracted to all genders. That doesn't necessarily mean you are going to be attracted to every single person you see. Pansexual is also generally thought of as "gender blind", meaning you would be attracted to someone without caring what their gender is, whereas Omnisexual, for example, are also able to be attracted to every gender like pansexuals are, but they don't consider themselves "gender blind".