Baby bottles are widely used to feed newborns and infants. In Brazil, the inclusion of milk in children’s diet starts in the first month of life, reaching 18.2% in capitals and 50% by the end of the first 6 months. However, information about the migration volatile compounds from baby bottles still are scarce. The migration of volatiles compounds from polypropylene, Tritan y silicon has been investigated in 12 baby bottles models by gas chromatography-mass spectrometry. Moreover, odorous compounds released from silicon were investigated by chromatography-olfactometry-mass spectrometry. For this purpose, migration tests were performed with ethanol 50% as milk simulant. Next, head space solid-phase micro extraction was optimized through Plackett Burman and central composite design. Volatile compounds were identified using library NIST14. Odorous compounds were identified by comparison of their Kovats' retention indexes determined by SPME-GC-O-MS with those reported by HS-SPME-GC-MS. Moreover, the identification was confirmed by characterization of the aroma of each compound obtained with aid of six trained panelists during SPME-GC-O-MS analysis. Forty-five volatile compounds were identified. 2,4-Di-tert-butyl phenol was the only compound identified in all samples with a concentration range between 50.62 - 523.72 µg.kg-1. Most of the identified migrants came from silicone baby bottles. Regarding olfactometry analysis, (E)-2-Decenal (149.95 - 245.09 µg.kg-1), trans-2-nonenal and (E,E)-2,4-dodecadienal were the main compounds identified in silicone baby bottles. However, trans-2-nonenal and (E,E)-2,4-dodecadienal were detected below their LOD evaluated using MS detector.