Despite the mainstreaming of smart devices, user abandonment of these devices remains an unresolved challenge. It is easy to come across users who have stopped using their smart devices, whether it be a smart watch or a voice assistant. This study explores the olfactory sense as an object of design practice, examining how designers can use the olfactory sense to design for an emotional experience between a user and a smart device. It takes a research through design approach and uses a design experiment as a research method. It aims to investigate how olfactory stimulus and its interaction effect with visual stimulus influence the user’s emotional response during the interaction with an AI chatbot and the user’s willingness to continue to use an AI chatbot in the future.