A semi-modular kitchen would not be early complete, if you don’t install a chimney. In any case, irrespective of the kind of kitchen you have, you would need a chimney to keep the malodour and the grime out, and maintain the freshness of the kitchen. Moreover, chimney lends a sleek, classy, and a truly modern look to a kitchen. So, choose any one of the wall-mounted, island, or a built-in one - but choose one.