Medical men concede that cigarette smoking in moderation is not injurious to the average normal man, for the reason that his vitality, his outdoor life and the opportunity he has for exercise will offset the injurious effect of the nicotine he inhales. But there is no counteracting influence in the case of the gentler sex. (Burke 19)
Cigarette manufacturers recognized the societal taboo against women smoking and generally observed it in their advertising. As seen here, advertisements showed me engaging in fun, healthy activities, often outdoors or playing sports. Women were present as observers only.
As cigarette manufacturers began to recognize they were losing sales to half the population, their acceptance of restrictions against selling to women began to wear thin. In the suffragette movement and emergence of women wanting independence, the cigarette industry recognized a golden opportunity. Executives in the industry, and those they hired to promote their products, would prove adept at both sensing in public sentiment opportunities to increase sales, and in finding ways to exploit that public opinion.