u/DeeplyCooked

I was scraping off some polystyrene tiles after removing a built in wardrobe, seems like they stuck them onto wallpaper. I wore a mask as it was quite messy anyway, but after I got a few off I thought maybe I should get it tested. Just waiting for a kit to arrive, but in the meantime, do you think this is very likely? This part of the house was an extension done in either late 70s or 80s, not sure when the tiles would have been added though.