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Which is an asthma trigger? A. respiratory infections B. irritants such as cigarette smoke C. climate changes or cold air D. all of the above

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D all the above respiratory infections, climate change, and cigarette smoke another irritants can all cause asthma complications
User Justin Smith
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D. All of the above

Nearly anything that puts stress or strain on an asthmatic person's lungs may trigger an Asthma attack.
User Leogdion
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