How to make a large room smell nice?

[walkwalk]

Without spending a fortune...

It's an open plan kitchen living room space.

Scented candles just get lost, same with Reed diffusers. Would probably need 3 to notice it which i can't afford.

What's cheapish, nice and works in a large space?

Ta! :)

Does it smell bad at the moment? if so then identify the source of smell and sort (tricky if it’s a beloved dog I guess)

Or does it just smell neutral and you want a scent? If so then i’m with the pp who hate fake smells.

Big multi wick candles from sand and fog are great. Usually get them in homesensr/tkmaxx

Friend of mine puts a couple of drops of essential oils on cotton wool balls then puts one behind each radiator. Her house always smells lovely