They normally hatch around april, I would burn that piece of furniture or get it out of the house asap....You can get protim which kills the woodwood. You also have to scrap a candle over the holes as they woodwood cant eat through wax, well from what I can remember since I read about it.
I'd check other areas around where you had peice of furniture for flight holes.....
Also its can be very hard to virtually get rid of them once they settle in. My house is over 60+ years and have found them in attic trusses,treated where ever I could but there might always be a place I've missed.