WE INDUCED SMELLS WITH ULTRASOUND

Summary from the TLDR newsletter

Smells are processed in the olfactory bulb, which is tucked behind the top of the nose. Scientists have managed to use ultrasound targeted at the olfactory bulb to induce the sensation of fresh air and ozone and the smell of garbage and burning wood. Smells are strong and localized to the nose, while sensations are more diffuse, like a light tingling on the face. The scientists plan to improve their technique to significantly increase the bit rate of olfactory stimulation.