Last year it became illegal to smoke inside any public place in Washington state. Why aren’t hookah bars affected by this?

Does anybody know how to make a mouth tip (the little plastic things you put at the end of the hose)? I’m smoking in a few hours but don’t feel like going out to buy one (I have a cold and dont want to give my friend one). So does anybody have any quick tips to make one? Out of like a bottle cap or something