"A lot of these planters are in a wooden container or a plastic pot
Proctor argues in his book that cellulose acetate filters are a gimmick and a fraud. Filters were put on the ends of cigarettes for three principal reasons, he writes, to lower the cost of manufacturing, to keep tobacco bits from entering the mouths of smokers, and to lure people into thinking that brand Alpha, Beta or Gamma was somehow safer. Although filters prevent some quantity of carcinogens from entering a smokers lungs, Proctors graduate student, Bradford Harris, who has studied the early history of cigarettes, said in an interview that overwhelming data suggest that filters are ineffective. Novotny of San Diego State University agrees
[36] Murray RL, Britton J, Leonardi-Bee J
The exceptions were the proportion of men, which was higher, and mood during exposure to cigarette smoke, which was worse in the group with a history of smoking