Hoods are a great addition but a closed kitchen is the real deal if you want to keep smells out of the house. Even the best hoods can't keep up with cooking anything remotely smelly.

And in many places the hood doesn't extract outside but just filters and blows back in the kitchen. Even less efficient.

In modern buildings you get these together: an open kitchen meant to make the living room look more spacious and a hood that and just spins the air around a bit because it can't blow it outside (it's nowhere near an outside wall, or you can't just drill a big vent, or mess with the air circulation). The smell will go to every place that didn't have the door closed. Don't get me wrong, the smell of good food is great, but not when it gets in your dresser full of clothes or when the house gets saturated with a cacophony of smells very difficult to remove.