Do you have an extractor fan in the kitchen? It would help. Of course, the guests have to actually use it. I’ve found that certain aromatics, like garlic and onions, and spices, like turmeric, linger in the air when they are fried in oil at high heat. It’s almost as if the odors get trapped in tiny particles of oil and cling to everything.
In my house manual I do ask guests use the fan and/or open a window, if they are cooking spicy foods or frying. It’s an entire house rental, so I’m not there to know if they follow the instructions.
Also, my maximum stay is 7 days. It seems people on short visits are less likely to do elaborate cooking.
One way to discourage heavy kitchen use without seeming like you are restricting guests or lacking hospitality is to *encourage* eating in restaurants.
I have a local guidebook with many, detailed restaurant recommendations in all price ranges. It’s both embedded in the online listing and printed out on the kitchen table. I even have some menus for nearby restaurants that offer takeout and delivery.