If you're looking to get rid of the smell of terracotta, there are a few things you can do. First, try airing out the piece - set it outside or in a well-ventilated area for a day or two. If that doesn't work, you can try washing it with soapy water and then letting it dry completely in the sun. You can also try using a vinegar solution - mix 1 part vinegar with 3 parts water and scrub the terracotta with this mixture. Let it sit for 15 minutes before rinsing it off.