tobacco as a carcinogen Smokeless Causes Higher Levels of Carcinogens than Cigarettes Cancer - How Tobacco Smoke

Tobacco has been cultivated by humans since 5000 BC and was initially used for medicinal and ceremonial purposes (1), but the cigarette as we know it today was invented around 1900 AD

Behavioral patterns and risk exposure may differ among upper secondary students

You can further try turning off lights and unplugging appliances to narrow down the source of the odor

Social opportunities: creating anti-smoking norms and environments Participants identified a range of strategies to reduce adolescents social opportunities to smoke, centred around three key areas: banning staff smoking in schools, promoting non-smoking role models, and harnessing positive peer influence