I need help installing kitchen ventilation system as the microwave ventilation system takes in the cooking odor then recirculated back to kitchen. I need to connect the microwave ventilation system to outside duck but I live on 4th floor and there is no outside wall from the kitchen without going through bathroom and bedroom. I was wondering if I could create a duck system from the kitchen to dryer hose. I am assuming that all dryer hoses are connected to outside ventilation system. Please help me as my house smells like the food I had last night.