11. Is there, except for ventilation over the kitchen stove, any kind of mechanical ventilation or air filtration in the home? ATTACHMENT 6: Symptom score The patients are asked to draw a circle around one of the numbers, from 1 through 5, indicating the degree of symptoms, 1 meaning no or never, 5 meaning many times each night, severe, always, cannot breathe through my nose or cannot breathe through my nose while sitting still, respectively. For patients taking antihistamines, the nose symptoms are valid for the last 5 days. Otherwise, the questions are applicable to the last month.