Gluten needs to be ingested to cause a reaction. It is unlikely that one would swallow a significant amount of these items to cause reaction. However, individuals concerned about this may use products labelled gluten free and avoid any products which contain wheat, barley, rye or oats listed in their ingredients.
A gluten-free diet excludes any foods that contain gluten, which is a protein found in wheat and several other grains. It means eating only whole foods that don't contain gluten, such as fruits, vegetables, meat and eggs, as well as processed gluten-free foods like gluten-free bread or pasta.