You're not wrong, Paladinx. Tars from smoking do kill off cilia over time, in effect burying the tiny hairs. If a body is allowed to rid itself of tars before permanent damage is done, cilia will regrow and resume their functioning. The first few days off cigarettes are often accompanied by deep coughing, with tar flecks visible in phlegm. It's like self-cleaning of an atomizer, only without blinking lights and heat.
But nicotine is the paralyzer here. Ever take a suck on a really strong cigarette, then suddenly gasp for air? What happened was that nicotine paralyzed muscles at the top of your windpipe, shutting down your ability to breathe. Your body reacts quickly with a gasp for air and a cough to get rid of the paralyzing chemical you just took in.
My remaining question to research: Does this paralyzing effect occur only with inhaled nicotine? Or could NRT, snus, snuff, etc. cause the same effect even though the route of entry is different? We know nicotine is not benign. But just how bad is it when not part of tobacco smoke?