Advice/help please - drafts/air above ground floor ceiling

[Ells99]

Good morning

We have recently moved into a property that was built around 1980. The ground floor rooms lighting is mainly served by downlights, however, there are drafts coming from each and every light fitting, in each room - kitchen, dining, living room, hall etc

I appreciate that there are different versions of downlight that may eliminate the drafts to a degree, but, is it correct that the air is there to start with?

Any advice welcome.
Thank you!

 

[Wayners]

Yeah. Can bow from air vents in wall or from holes in cavity walls around joists that are venting the air you are feeling