Mainly cosmetic: most e-cigarettes have been made to look like a cigarette, whereas "shisha pens," hookahs and other devices are often larger and don't look anything like a cigarette. However, how they work (volatalizing either a liquid form of drug like nicotine or even volatiilzing the nicotine out of tobacco or the THC/CBD out of marijuana) is the same technology in either an e-cig or another device.
Answered 1/17/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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