I have a chimney-style cooker hood over my hob. Today I removed the cover from the chimney, expecting there to be a flue behind it going outside the building, but there wasn't.
Does this mean that the hood has been installed incorrectly? Is it actually doing anything? Shouldn't there be a flue to remove the fumes from my kitchen?
Apologies if this is a stupid question but it seemed odd that my cooker hood should just release the fumes back into my kitchen!