The other side of the abstinence issue is that it's difficult to find good information about the relative risks of different smoking behavior. Nearly all smokin

The other side of the abstinence issue is that it's difficult to find good information about the relative risks of different smoking behavior. Nearly all smoking advice and all smoking regulations are based on the notion that literally no amount of exposure is acceptable -- full stop, end of story, do not inquire further. Even the CDC uses that kind of hysterical, unscientific language to describe the risks of secondhand smoke: "There is no risk-free level of secondhand smoke exposure." [0] That's a religious claim, not a scientific one. [0] https://www.cdc.gov/tobacco/data_statistics/fact_sheets/secondhand_smoke/general_facts/index.htm https://www.cdc.gov/tobacco/data_statistics/fact_sheets/seco...