# Caution: these estimates do not meet Statistics Canada's quality standards
In fact, one study showed that smokers taking statin drugs had an 86% increase in the risk of having a major cardiovascular event such as a heart attack, stroke, or death compared with nonsmokers on statins
The best air purifiers for cigarette smoke removal typically have a rating of 300 and above, providing a greater efficiency of air clean-up
However, as more and more research was conducted on the harmful effects of smoking, tobacco use became stigmatized among the west, and stricter rules were passed and enforced to mitigate the damage caused by both active and passive smoking
By the 1920s, with many more working women, cigarette usage became more common