In this paper, we propose dynamic output timing control of fragrance in a networked virtual environment to improve the quality of experience (QoE). The control changes the output timing of fragrance dynamically in accordance with the movement speed and direction of a fragrance source. We implement the control in a remote ikebana (Japanese flower arrangement) system with olfaction and haptic sense and investigate the effect of the control by QoE assessment. As a result, we demonstrate that the mean opinion score (MOS) when the control is used is high and does not depend much on the movement speed and direction of the flower, which is the fragrance source.
