Asthma More Condition_symptoms, For People Who Have Asthma? Do You Have More Problem When You Live In Bigger Cities With More Cars Like?

For people who have asthma? Do you have more problem when you live in bigger cities with more cars like? - asthma more condition_symptoms,

New York, London and where it is unlikely that more CO?
Do you have more wheezing and need her inhaler?
I am doing research so please mention your age group 16 to 18, and if possible, the cities in which they live and how did you wheeze?
Moreover, mean asthma is not better on the field? That was not mine, and I wonder if further contamination is linked to an association with allergies!