Combined ethanol exposures results in an altered behavioral response as compared to adolescent exposure alone. Mean composite reflexive sniffing index values (± sem) for all adolescent animals exposed to ethanol odor in adolescence as a function of maternal treatment. Relative to pair-fed and free choice control animals that received ethanol odor exposure during adolescence, adolescent re-exposure to ethanol alters the behavioral response in animals with prior fetal ethanol experience. ET/ET = animals with both fetal and adolescent ethanol exposure. PF/ET = pair-fed animals with ethanol exposure in adolescence. FC/ET = free choice animals with ethanol exposure in adolescence.