Subhadrika Sen
Air vents help in air circulation ensuring you have fresh air to breathe around you.
By removing germs and airborne particles through purified air, it reduces any risk of infection.
The continuous recycling of air also cuts down on stale air and odours.
It reduces motion sickness and associated high-pressure symptoms like light-headedness or nausea.
You can always adjust its position in case you are feeling too cold, but never completely switch it off.