A method and apparatus are provided to determine a pattern of emitting scents uniquely tailored to a particular user. A wearable fragrance emission device may store a fragrance emission pattern which correlates particular conditions with scents to be emitted from the device. The device detects conditions, such as environmental conditions or conditions related to the user, and periodically emits one or more fragrances in response to detected conditions. The wearable fragrance emission device may include one or more sensors for detecting the conditions.