Tobacco methods. Some examples are: Smoking in public was, for a long time, reserved for men, and when done by women was sometimes associated with promiscuity; in Japan, during the Edo period, prostitutes and their clients often approached one another under the guise of offering a smoke. The same was true in 19th-century Europe. Following the American Civil War, the use of tobacco, primarily in cigars, became associated with masculinity and power. Today, tobacco use is often stigmatized; this has spawned quitting associations and antismoking campaigns. Bhutan is the only country in the world where tobacco sales are illegal. Due to
Tobacco smoke is considerable. Flue-cured ("bright") tobacco typically produces acidic smoke, whereas air-cured ("burley") tobacco typically produces basic smoke. The natural acids in tobacco smoke (e.g., formic acid, acetic acid, and propionic acid) can protonate nicotine, while the natural bases (e.g., ammonia) tend to neutralize the acids and keep more nicotine in the unprotonated form. Acidic tobacco additives such as levulinic acid are used as "smoothing" agents to reduce smoke harshness. Tobacco smoke Cigarette smoke is an aerosol produced by the incomplete combustion of tobacco during the smoking of cigarettes. Temperatures in burning cigarettes range from about 400 ℃ between puffs to