Pollution can endanger aquatic animals by damaging their sense of smell
Sleeping people can be taught to make connections between sounds and smells
Better understanding of the sense of smell inspires research into everything from whales to electronic ‘noses’
Tests show that older adults have a distinct odor, but it isn’t bad
Mucus may play big role in the nose’s job of smelling
To pinpoint smells, an electronic nose turns scents into colorful data.