What ventillation is needed to have a gas hob, in an internal room with no exterior windows or doors?

Hi Joj...

Need to know what you wanted here..? I simply can't decide what you meant by a gas hob?

Whatever this is, let me know the appliance, how many BTUs are being used and we'll see what we can come up with!

MARK

My best guess is a "Home Owner's Barbeque".