Place your colloidal silver bottle inside of a plastic zipper bag, and zip it up. Set the bag in your luggage before check-in. Do this if you do not need the colloidal silver until you reach your destination.
Look at your colloidal silver bottle. If its larger than three oz., pour three oz. in a small three-oz. container. This is only necessary if you need to bring your colloidal silver in your carry-on bag.
Place the three-oz. colloidal silver container in a one-qt. plastic zipper bag, and zip it up. Make sure the container is labeled "colloidal silver" so that security will know what is in the bottle.
Keep your plastic bag out when you go through security so that you can quickly place it in the security bin to be X-rayed.