Patent# US 6842218, which refers to the Scent Delivery System, allows the user to pick his or her own smells, a rather dubious thrill to begin with. It works by injecting scent into an airflow created by the fan or canister, and creates scented air, which is carried to the nose by the flow of air via a nose mask or facemask. If you are wondering why anyone would want such a thing, join the club whose membership is fast disappearing from a lack of interest.
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