It's very bold of you to assume that my kitchen has ventilation at all. There's an electric extractor fan that just blows the air back in your face. I've seen other people's place where they don't even have that charade.

I'd love to have a real setup. Unfortunately I've not been given that option and it is the same for many others.

I don't know how the codes are where you live, but in EU the norms are for natural ventilation in kitchens where gas stoves are used.

Well you could open a window.