This bill amends the Bottles and Breastfeeding Equipment Screening Act to enhance the hygienic handling of breast milk, baby formula, and related liquids during aviation security screening. It directs the Transportation Security Administration (TSA) Administrator to issue or update guidance within 90 days, and periodically thereafter, to minimize contamination risks during re-screening or additional testing. This guidance, developed in consultation with nationally recognized maternal health organizations, will establish and ensure adherence to hygienic standards for both TSA and private security personnel. The guidance specifically covers breast milk, baby formula, purified deionized water for infants, juice, and associated cooling accessories like ice packs. Furthermore, the legislation mandates the Department of Homeland Security's Inspector General to conduct an audit within one year of enactment. This audit will assess compliance with the new hygienic handling requirements and report on the effectiveness of various screening technologies, including bottled liquid scanners, and the rate at which these items are denied entry into sterile areas.