I know its a bit of an impossible question, its just its become very apparent that my biggest triggers are colds and viruses. My asthma is reasonably well controlled, but the minute I have a cold or virus my asthma spirals downhill, my peak flow drops, I wake at night, have symptoms most of the day and cannot control it even with lots of reliever. In fact I know I'm coming down with someone as my asthma reacts before I even show signs of a cold/virus. In most cases I end up with a chest infection too,I think I've had one just about every month this year already. I have two younger children, help out at school and work in a hospital so avoiding colds/viruses is near on impossible. Does anyone have any suggestions on how I can protect myself?