The team said their new AOS requires little energy and integrates sensing and computing units on the same chip. It detects food spoilage by employing thin zinc oxide films that sense even very low levels of hydrogen sulfide and ammonia gases that are high-protein food spoilage markers.

When investigators tested it during the spoilage process of chicken tenderloin, the system continuously tracked freshness scores and food conditions over time. The platform could be used for various applications by adjusting the gas-sensing materials and other parameters.

— Read more in Artificial 'nose' detects spoiled food and reduces waste at The Jerusalem Post.

Researchers at Monell and Google-backed olfactory AI startup Osmo have created a machine-learning model that could accurately describe the smells of chemicals by their molecules. The team found that the AI could also describe the scents better and more accurately than humans. This breakthrough, detailed in the journal Science on Thursday, is a major step forward in the quest to digitize smells.

— Read more in Why Google Wants You to Smell This Article with AI at Daily Beast.

Airports and train stations all over the world may soon switch out drug-sniffing dogs for their not nearly as cuddly robotic counterparts. A technological breakthrough by a team at Tel Aviv University has made it possible, for the first time ever, for a robot to smell odors using a biological sensor. The sensor works by sending electrical signals as a response to the presence of a nearby odor, which the robot can then go on to detect and interpret.

— Read more in Smell of science: Researchers develop first-ever robot able to sniff odors at StudyFinds.