What does an "Additive free" cigarette mean? AND NO ANSWERS LIKE SMOKING WILL KILL YOU BLAH BLAH!!!!!!!!!!!!!!?

I smoke a brand that says that it does not contain any unnecessary additives in it, now I know that this means it's not a safe cigarette but what does "No additive" or hardly any additives mean in a cigarette? Like does it mean it would be easier on your lungs or something? Please help me out people, thanks =)