These systems were sometimes referred to as engineered smoke control systems, typically designed to provide compliance with the pre-2000s model building codes for mechanical smoke vent systems
You can think of it like a bouncer: Large, heavy, and unwieldy molecules like tar (the troublemakers) are effectively trapped by the vast surface of the activated carbon and cannot enter
They are natural instances of it happening, but it is mainly practised by livestock farmers, usually with a male cow and a female bison
For future reference for collectors, we note that at a glance one can determine if a pack is a 1909-1911 T206 era pack based on the number of cigarettes in the pack: The fact that this pack is a ten-cigarette pack, of course, is consistent with the pack dating from the T206 era (twelve-cigarette packs, which have been presented as T206 packs in the past, were not issued until 1917 or later)
When you engage in habits that are detrimental to your health and to your familys health, three things happen