system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does bedding feel and smell so good after a day in the sun and wind at the balcony/terrace/garden?
gpt
Outside the air is generally what we consider "fresh" sure it's full of minute pollutants but it's fresher than the potentially stale air inside you're house. Outside there's much more air for moisture to dissipate out into and the air and wind has a much better chance of taking any residual odours with it. 

Also a lot of nasty scents are reduced given that UV rays can kill the bacteria that cause them.