You cannot hide liquids from modern airport scanners, and attempting to do so is a high-fidelity way to get yourself flagged for a manual search or a "Secondary Security Screening Selection" (SSSS). Modern Computed Tomography (CT) scanners used by TSA and global security agencies create a 3D image of your bag's contents and can identify the molecular density of liquids even if they are wrapped in foil, hidden inside shoes, or disguised in non-liquid containers. These scanners are specifically programmed to detect the density of explosives and flammable fluids. In 2026, the best way to handle liquids is to follow the 3-1-1 rule (100ml bottles in a 1-quart bag) or to travel through airports that have upgraded to the latest scanners which allow you to keep full-sized liquids in your bag. If you have a legitimate medical or childcare need for larger volumes, you must declare them to the officer for a separate manual inspection rather than attempting to "hide" them, which will only lead to delays and potential legal complications.