Smokers are individuals who regularly inhale tobacco smoke, typically from cigarettes, cigars, or pipes. This habit can lead to various health issues, including respiratory diseases, heart problems, and cancer. The addictive substance in tobacco is nicotine, which makes quitting difficult for many smokers. In addition to health risks, smoking can also affect those around the smoker through secondhand smoke, which can harm non-smokers, especially children and pregnant women. Many countries have implemented laws to restrict smoking in public places to protect public health and reduce exposure to tobacco smoke.