Yes. From the BIC website:

Why is there a hole in the cap of BIC® Cristal® Pens?

Our vented caps comply with international safety standards ISO11540. These standards attempt to minimize the risk to children from accidental inhalation of pen caps. Traditionally the pen cap served only to protect the pen point. These vented caps allow more air to circulate around the pen point when the pen is capped. This further adds to the quality and overall performance of the pen.