In our recent studies, we have applied a measurement system for aerosol spreading in the generic train laboratory Göttingen (GZG) for different source locations and various ventilation concepts. The latter comprised, among others, different exhaust positions either in the lateral ceiling or in the legroom. The measurements were carried out until a quasi-stationary local aerosol particle concentration was reached. The evaluation was performed in terms of the mean aerosol concentration load in the compartment and with regard to the number of seats revealing aerosol concentrations above certain thresholds. First results highlight the influence of the airflow concept on the aerosol spreading within the passenger compartment. In this context, the exhaust position caused only a minor change in the local aerosol particle concentrations, whereas larger differences were found for alternative, hybrid air-supply positions.