Roll papers, blunt wraps, hemp papers
Understanding why one cigarette tastes mellow and another bites your throat is more than just personal preference its chemistry, cultivation, manufacturing, and perception all rolling into one
This group is ten times as likely to agree with the following statements about smoking: Its not as bad for your health as most people think (18% vs 2% of those who agree that smoking is bad for your health) and As long as you have the right genes, its not bad for your health (12% vs 1% of those who agree that smoking is bad for your health).
Best test there is to use a portable hand held pump and test that independently (again with engine off.) And then there are the Heating Ventilation Air conditioning (HVAC) automotive systems from Mid 1970's till 2000 or so
Some contend she was smeared as writing with the hand of the devil, along with using the psychedelic root mandrake (which she denied, although she said she was aware of it)