Exhaust fans have now become an essential part of our kitchens and bathrooms. These fans are helpful in removing bad odours from places where there is little ventilation. They also help in decreasing the level of humidity from the air. They help in improving the quality of air.
That's really great thing for kitchen. But I prefer touchless one. In general I am fond of touchless kitchen appliances, and already have coffee machine, refrigerator and blender totally touchless. By the way if you are interested in such appliances too you can look for them at foodplusice (foodplusice.com/best-counter-depth-refrigerators)
As for some ventilations systems, we have just installed a textile one from texair.eu/ in our office, and I have to say that it is one of the best systems I have ever seen and worked with. It was so easy to put it in place and fast too. I think you will find it helpful to you too, have a look there