I do have to very respectfully disagree with you on the second-hand smoke. This is the rare occasion I don't agree with you. If it weren't bad, then why do I get so violently ill around it? It's not a psychological reaction. Yes, automobile exhausts are bad, and I get sick from them also, but the cigarette smoke makes me even more ill, or at least it's an immediate violent illness, and it lasts several days after exposure for me.
I think there is a big difference between what you are smoking, which is totally natural and I doubt would make me sick, and that which my father and most of the other people out there are smoking ... they are NOT smoking pure tobacco, but something with lots of additives. Probably what is making me sick is not the smoking tobacco itself but the "extras" that the tobacco industry adds.
Smoke from burning leaves, wood, etc., do NOT make me ill. The smoke from cigarettes do. I am so sensitive to it that I don't even have to "see" evidence that a smoker is/was around. They may have been in the room or car an hour or even a day before, and my body still reacts to the remnants in the air or furnishings (much milder reaction after a day, but I still get a reaction). Even if I never knew they were there, I get ill, so my body IS detecting it and is reacting. And my sisters are the same, so it's not just me. My body can sense when it's bad smoke or not—I have been around a few smokers that don't bother me at all, but those folks are rare; they were using something more natural like what you use. I do not group the "organic" cigarettes with the mainstream tobacco industry ones that the majority of folks here smoke.
What you smoke is pure, innocent tobacco, like burning leaves and wood like you said. What they're smoking is not.
With much respect to you, that's all I have to say on that subject. :) I didn't want to start a debate on second-hand smoke, as I know it's a hot topic for smokers and non alike, and neither side will ever agree. So I'm not going to press the issue.
Nevertheless, my original question still remains unanswered, about nicotine and other additives from airborne cigarette smoke ... can that build up and remain in the body over an extended time? Obviously auto exhaust can, as can all those other daily use items you mentioned like lotions, soaps, etc. So what about airborne cigarette smoke?