Ramamurthi Divya, Chau Cindy, Jackler Robert K
Stanford Research into the Impact of Tobacco Advertising, Stanford University, Stanford, California, USA.
Tob Control. 2018 Sep 15. doi: 10.1136/tobaccocontrol-2018-054455.
Some consumers wish to use vapour devices discreetly so that family members, teachers and coworkers do not recognise their use of nicotine oretrahydrocannabinol (THC) laden vapour.
Stealthy vapour devices, as well as low-odour and low-vapour e-juices, were identified via a comprehensive online search between March and June 2018.
As evidence of their popularity, a search for 'stealth vaping' on YouTube found 18 200 videos. A variety of cleverly designed vapour devices disguised as USB sticks, pens, remote controls, car fobs, smart phones, sweatshirt drawstrings and even asthma inhalers are on the market. JUUL, which resembles a USB stick, is the archetype of these devices and is especially popular among youth. A search of 'JUUL' on YouTube yielded 148 000 videos with 57 videos having >100 000 views. Searches on 'JUUL at school' (15 500), 'JUUL in class' (6840), 'hiding JUUL in school (2030) and 'JUUL in school bathroom' (1040) illustrate the product's popularity among students. Some e-juices promote themselves as having low visibility plumes while others profess to be of subtle odour to avoid detection. Numerous techniques have been described to hide the exhaled vapour plume such as by swallowing it or blowing it into one's clothing or into a backpack.
The vaping industry has demonstrated much ingenuity in devising discreet vaporisers and de-emphasising exhaled vapour plumes and their aroma. The US market for vaping devices with stealthy characteristics is anything but inconspicuous, with JUUL alone accounting for 70.5% of sales (July 2018).
一些消费者希望谨慎使用蒸汽设备，以免家庭成员、教师和同事认出他们使用含尼古丁或四氢大麻酚（THC）的蒸汽产品。
通过2018年3月至6月全面的在线搜索，识别出隐蔽的蒸汽设备以及低气味和低蒸汽的电子烟液。
作为其受欢迎程度的证据，在YouTube上搜索“隐蔽蒸汽吸用”发现了18200个视频。市场上有各种设计巧妙的蒸汽设备，伪装成U盘、笔、遥控器、汽车钥匙扣、智能手机、运动衫抽绳，甚至哮喘吸入器。类似于U盘的JUUL是这些设备的典型代表，在年轻人中尤其受欢迎。在YouTube上搜索“JUUL”产生了148000个视频，其中57个视频的观看次数超过10万次。搜索“学校里的JUUL”（15500次）、“课堂上的JUUL”（6840次）、“在学校隐藏JUUL”（2030次）和“学校浴室里的JUUL”（1040次），说明了该产品在学生中的受欢迎程度。一些电子烟液宣传自己产生的蒸汽羽流不太明显，而另一些则声称气味细微以避免被察觉。已经描述了许多隐藏呼出蒸汽羽流的技术，例如将其吞下或吹到衣服里或背包里。
蒸汽吸用行业在设计隐蔽的蒸发器以及淡化呼出蒸汽羽流及其气味方面展现出了极大的独创性。具有隐蔽特征的美国蒸汽吸用设备市场绝非不显眼，仅JUUL就占销售额的70.5%（2018年7月）。
