Bloodhound

You touch a willing creature to grant it an enhanced sense
of smell. For the duration, that creature has advantage
on Wisdom (Perception) checks that rely on smell and on
Wisdom (Survival) checks to follow tracks.
At Higher Levels. When you cast this spell using a
spell slot of 3rd level or higher, you also grant the target
blindsight out to a range of 30 feet for the duration.