what is the harmful effect of smoking on the upper part of respiratory tract?
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Effects of smoking on the respiratory system
irritation of the trachea (windpipe) and larynx (voice box) reduced lung function and breathlessness due to swelling and narrowing of the lung airways and excess mucus in the lung passages.
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Active and passive smoking cause upper airway diseases.
Also including sinonasal and larygeal cancers in adult bodies.
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