A Hookah is a smoking device. It is typically used to smoke sheesha (sp?) which is the tobacco you are referring to. It is also mixed with dried fruit. But you can also smoke pot with a hookah.
Here's the thing, if you smoked weed out of it, you would probably know. It would make you feel high. If it was only tobacco, you probably didn't feel anything. Most people smoke sheesha just cuz it is fun, not really for the affects. Sheesha only makes you feel relaxed (if anything.) And even if you did smoke weed out of it, or if there was a little left over weed, I still wouldn't worry. Your drug test isn't for a month, so it probably wont stay in your system for more than a couple weeks being that it was only a one-time thing.
Chat with our AI personalities