I just changed a filter in my air purifier after having it next to the kitchen for about 6 months. The prefilter was covered in a layer of cooking oil mixed with dust. The built in air quality monitor always shows poor air quality wheen cooking. Its no joke, especially in places that have poorly constructed/cheap stove ventilation.

That's yet another reason why I hate the trend of the last thirty years or so to open kitchens, but I'm in the minority so I have to look for older houses that haven't had a clumsy renovation to an open floorplan if I want an enclosed kitchen.

I just quit cooking with oil like that. I'm better off for having an open kitchen to be much less constrained and much more healthy. If you're refusing an open kitchen because you deep fry everything including the twinkies, i'd suggest you have larger issues!