The Kloby's Smokehouse at Johns Hopkins Road and Rte 29 is open and happy to sell you barbeque.
I only mention this because the original Kloby's in Windsor Mill has closed. I called the Laurel outpost, and they confirmed that the original closed and that the business has shifted down to the Howard County location. Kloby's has great BBQ. It's a casual place. Easy access from Rte 29. Great for takeout.
For more about barbeque in Howard County, check out the "What I Learned" post about kabobs and BBQ. Tip of the menu to Urbanspoon where I learned about Kloby's closing.