I went to my friends house last weekend for a sleepover. Her parents smoke, she has several cats and the place is really dusty. I found myself coughing and gasping alot. I used my reliever (ventolin) but it only lasted for just under four hours, so i had to take it more than the recommended number of times. In this situation, would a symptom controller be used e.g serevent? Just wondering if i should discuss this for future situations which may be similar.