While you can pick and choose who sees your Snapchat Stories and who can send and receive snaps from you, this SnapCode essentially makes your username public wherever you share it... so make sure your privacy settings are set how you want them.
For businesses, it’s best to set your stories viewable to all and limit the users that can send personal snaps. If you are trying to get a little personal fame on Snapchat, that could also be the way you want to go with your SnapCode. Just remember quality of places you share your code is more important than quantity of shares.