Their popularity appears to be related to the close similarities to smoking, the fact that they can be used in smoke-free places, the competitive price, and the perceived potential for harm reduction [60]
10.1016/j.ypmed.2020.106041 175
Archived from the original on 6 September 2015
The dark, damp environment inside the AC unit provides an ideal breeding ground for mildew and bacteria, which can produce a musty, foul smell
Singapore Customs also reminded the public that under the Customs Act and the Goods and Services Tax (GST) Act, buying, selling, conveying, delivering, storing, keeping, having in possession or dealing in duty-unpaid goods are serious offences
doi: 10.1038/nrc2290 134 SongYLaiLChongZHeJZhangYXueYet al