How does nicotine affect the respiratory system

It can start itching on the wind pipe. The larynx and the lungs start swelling from the inside making it hard to breath and swallow.

Effects of smoking on the respiratory system. The effects of tobacco smoke on the respiratory system include: 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.

explanation:

eventually, the disease can cause permanent damage or deterioration of the nerves. some people with ms experience a gradual onset and steady risk factors.