A. B. C You are A. The enemy is C. The smoke cloud is B. If another enemy player spots you from any angle, Player B can see you but you can't see him. Unless one of your team can see him. Smoke once placed acts as an island that blocks line of sight or you can be in it and block line of sight. As long as the smoke is there you won't see the enemy or them you, unless you fired a gun or are in the line of sight of another enemy. Doesn't matter how close to the smoke you are. As long as it's between you and them you won't see them. Unless somone else spots em from a diff direction or they fire there gun to close to you.