Eu-reek-a! Scientists are advancing virtual reality technology to allow users to not only see 3D augmented environments — but to smell them, too. Engineers from China’s Beihang University and the City University of Hong Kong have created a futuristic headset that can emit 30 different odors to its wearer, including coffee, mojito, pancakes and ethanol, according to a paper published Tuesday. The project aims to launch the experience of VR users by expanding their range of haptics, or the technology that can create physical experiences during gameplay. “Recent human-machine interfaces highlight the importance of human sensation feedback, including vision, audio,...