What will you discover?
How air carries smell from a kitchen to the next room, explained by Aarav.
Key takeaways
- Smells are actual particles, small enough to float in air.
- Diffusion spreads particles from crowded places to emptier ones.
- Warm air moves faster, so smells travel quicker in a warm kitchen.
- If you can smell smoke, you are already breathing part of it.
Questions this video answers
Why do smells reach us faster in a warm room?
Warm air particles move faster and bump around more, carrying smell particles across the room quickly.
Can you smell air pollution?
Some of it, like smoke or exhaust. But the most harmful particles, such as PM2.5, have no smell at all.
Take the learning further
Ask a grown-up to open a bottle of something fragrant at one end of a room. Stand at the other end and time how long the smell takes to reach you. Repeat with a fan on.
