If the food is packed with ice or ice packs in a cooler or other container, the ice or ice packs must be completely frozen when brought through screening. If the ice or ice packs are partially melted and have any liquid at the bottom of the container, they will not be permitted.
Liquid, aerosol or gel items must be in containers of 100 millilitres (volume), 100 grams (weight) or less. Containers must fit into one transparent and re-sealable plastic bag like a snap-lock sandwich bag.
If your food needs to stay cold, pack it with frozen gel packs, but be careful to pull them out of the freezer the moment before you leave for the airport. Partially melted freezer packs or foods that veer into the liquid territory because they've defrosted will be confiscated.
You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes through the checkpoint.These are limited to 3.4 ounces (100 milliliters) or less per item. This is also known as the 3-1-1 liquids rule.
Not only that but the ice itself is typically made from the plane's tap water, which can be riddled with bacteria due to the fact that an aircraft's water tank is rarely emptied and cleaned, according to a study on the quality of aircraft water (via Insider).
You are permitted to bring solid cosmetics and personal hygiene items as such lipstick, lip balm and similar solids. Please remember these items must be solid and not liquid, gel or aerosol.
You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes in your carry-on bag and through the checkpoint. These are limited to travel-sized containers that are 3.4 ounces (100 milliliters) or less per item.
Yes, toothpaste is considered a liquid when flying and must be within the 3.4oz (100ml) limit for liquids in order to bring it in your carry-on bag. Any amount larger than that must be checked with your luggage.