A plurality of scents that produce a particular effect on an individual's appetite are identified. The plurality of scents are delivered to produce the particular effect on the individual's appetite. The particular effect may include one of suppression of the individual's appetite and enhancement of the individual's appetite. Identifying a plurality of scents that produce a particular effect on an individual's appetite may include delivering a second plurality of scents to the individual, detecting a response of the individual to each respective one of the second plurality of scents, and identifying the plurality of scents that produce the particular effect on the individual's appetite based on the responses detected. A schedule for delivery of scents may be generated based on data relating to the individual's responses, and the plurality of scents may be delivered in accordance with the schedule.