Pre-operative stress is well documented and multifactorial in aetiology.Anxious patients often show further signs of stress immediately prior to indaction of anaesthesia and during pre-oxygenation.In our hospital standard black rubber masks are used for preoxygenation.Several authors have reported the use of scented oils painted onto the rubber face masks facilitating inhalationalinduction in children 1.The objective of this study was to assess whether adult patients had a preference for the type of face mask used for preoxygenation prior to the induction of anaesthesia.100 patients ASA class 1, 2 or 3 aged between 17 and 19 years were chosen at random from the theatre list for elective surgery to be included in the study.The patients were visited on the ward.It was explai ned that they would be brought directly in to the operatin g room prior to surgery.An intravenous cannula would be sited and baseline monitoring established.They would then be given oxygen to breathe for 2 rains prior to the induction of anaesthesia through either an anatomical black rubber face mask or 'King System's Fresh Scent' (mint scented) face mask.A brief description of each mask was given, alternating the order between patients.The patients were allowed to handle and breathe through the masks and then express any preference for one or other mask.