Aurasense is a portable battery-operated device being developed by Cannabis Sensors Inc. Aurasense detects the generated smoke resulting from the use of recreational cannabis. A multi-gas sensor system is built to detect marijuana smoke. This sensor system can distinguish marijuana smoke from tobacco smoke using several electrochemical sensors. With high accuracy electrochemical sensors, the concentrations of different gas molecules are obtained and analyzed to differentiate different smokes. The projected date for a functioning prototype for Aurasense is estimated before June 2019.