People smoke on non-smoking floors with doors open. Smokes were in the air system. Even though we were supposed to be in non- smoking rooms, it still filled with smoke smells and allergens which made all of us sick with some kind of respiratory allergic reactions, such as eyes, nose, throat irritations, itchiness, and coughing. Non-smoking signs were posted, but no policy, such as fines, used to stop smoking violations. House keeping can be better.