Product design is the process of discovering a market opportunity, clearly articulating the problem, producing a suitable solution, and testing the product with real environment. Design thinking is one of the modern approaches in product design and development which incredibly helpful when solving challenges that are unclear or poorly defined. It generally reframes the issue from a human-centred perspective as it generates many ideas during brainstorming sessions and uses a hands-on technique during prototyping and testing. This study represents step by step implementation of significant phases of design thinking process to develop an electrical fumigation device mainly useful in Ayurvedic therapies. Fumigation (Dhoopan) is an ancient therapy in which dry herbal ingredients are burnt slowly to generate the medicated smoke. The device is adaptable and multi-purpose in all kinds of fumigation therapies along with air and surface sanitization with fume’s temperature control facility. Stainless steel (SS304) provides anti corrosiveness as well as aesthetic appearance. A comprehensive study has also been carried out to evaluate the effectiveness of the device in terms of air sanitization. It can reduce bacterial colonies by 40% and fungi spores by 32.75% within the specified location compared to the traditional fumigation. The device is also useful to common civilians in terms of air and surface disinfection for domestic applications.