- Feb 9, 2021 9:00 pm
- 16:52 mins
Research shows the most expendable sense is, by far, smell. One survey found that 64% of 500 millennial participants said they’d forgo the ability to detect scent if it meant keeping their smartphone. But what is the first thing we would notice if we couldn't smell anymore? Harvard University neuroscientist Venkatesh Murthy studies how smell works.