Ronair - if you were asthmatic since seven you would know that asthma often has nothing to do with pollution. It can be pollen, humidity, dust and any one of a 100 different things that bring on the allergies that eventually cause asthma. Only reason you feel better here is cause of change in environment - ie you moved away from whatever caused you to get sick. BUT don't worry buddy - if you live here long enough - with your already weaker lung system than most - the pollution will eventually make you sick. And just like a child with weak and sensitive lungs - you will in the end suffer more than most.
You of all people should know better......