If it wants to it will come to your area, make a noise or brush against you . . . Just as everyone has a different talent, people also sense different things when it comes to metaphysics. I remember talking about auras with my sister and she couldn't understand what I was talking about . . . She couldn't identify with that. Then she was telling me how she sensed things . . .
Some people also smell things like incense, perfume or smoke.
If it, the entity, is bothering you, getting too close or making you uncomfortable, tell it to leave you alone or to back off. This can be said out loud or in your head, it doesn't matter. Know that it can't hurt you unless you let it. Just like wild animals smell fear, so do entities. Only the nasty ones will use this to their advantage but it's better to be safe than sorry.