How would paralysis of the cilia caused by smoking impact the respiratory system ?

Explanation:

Cilia in the lungs are very tiny projections that acts as a filter and protect the airways of the body by sweeping the foreign matter away. The toxicants which are present in the tobacco smoke destroy or paralyze these projections and thus causing the removal of the protection from respiratory system. Smoking harms functioning of the cilia in significant way.

This can lead to a number of more serious smoking-related conditions.

It can lead to asthma attacks, and the smokers become at the  increased risk of the pneumonia and bronchitis contraction.