SmelloT refers to a digitized framework adopted by electronic devices to electrify scent. It integrates smell into a communication system that allows users to code, digitize, transmit, and recreate scent shared over a network. In this paper, we propose a scent recreating interface that facilitates electrical stimulation of smell sensations for a target user. The interface relies on galvanic coupling manifested via silver electrodes that are placed over the nasal cavity in a manner that actuate the epithelium cells responsible for olfaction by inducing electric impulses. The current and frequency parameters of these impulses are varied across time intervals to study the effectiveness of the interface on the olfactory receptors of the real user. The affected cells communicate the olfactory information to the brain via the olfactory nerve, thereby realizing the electrified smell. We performed experiments by placing two silver electrodes (1-2 cm apart) on top of a nose at 4.5-5 cm from the nostrils. Electric impulses in the range of 2mA - 4mA are provided at varying frequencies of 4, 20, 60, and 170 Hz for a duration of 15 sec each. The results revealed that the electrodes were able to electrically stimulate the olfactory receptors through galvanic coupling as the participant was able to perceive smells of different types such as fragrant, sweet, minty, chemical smells, and so on. The paper further proposes a novel ‘smell-o-search’ application that integrates a smell search option into a conventional search engine to enable users to search for similar scent profiles across a geography.

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