Use the sense of smell to guess familiar scents without seeing them.
Your nose can guess things even with your eyes closed. Play a smelling mystery game.
A grown-up will let you sniff a jar. Can you guess what is inside just by the smell?
Mastery looks like: They can correctly guess at least one familiar scent using smell alone, with eyes closed.
Common stumbles: Peeking before guessing is common and fine to gently redirect; the goal is playful practice, not a perfect score.