In Canada , for example , up to 75 % of asthmatics also have seasonal allergies .
Indeed , seasonal allergies are one of the main triggers for asthma , along with colds or flu , cigarette smoke and exercise .
In Canada , for example , up to 75 % of asthmatics also have seasonal one .
Indeed , seasonal allergies are one of the main triggers for asthma , along with colds or flu , cigarette smoke and exercise .