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And, their legislators are under enormous pressure from the Big Pharma companies to keep their population addicted to the poison that is cigarette smoke

E-cigarettes are part of a larger phenomenon known as tobacco harm reduction, says Carl Phillips, PhD, scientific director of Consumer Advocates for Smoke-free Alternatives Association (CASAA), a consumer and vendor advocacy group that promotes the use of non-tobacco products

Manufactured by Philip Morris USA and internationally by Philip Morris International, Marlboro transformed from a women's cigarette brand in the 1920s into the world's leading cigarette brand following its famous " Marlboro Man " campaign introduced in the 1950s

It depends on the type of smoke detector

"From what we can tell, it's still harmful to the baby so people shouldn't have e-cigarettes when they're pregnant." Follow @BBCNewsbeat, external on Twitter, BBCNewsbeat, external on Instagram, Radio1Newsbeat, external on YouTube and you can now follow BBC_Newsbeat on Snapchat