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Rapid innovation reshaped nicotine consumption: From early cigalikes to modern pod systems, vaping has transformed how people access nicotine, prioritising convenience, customisation, and reduced smoke exposure
Replace the mask when breathing becomes difficult or after 810 hours of cumulative use in smoky conditions
failure of counter-parties to perform contractual obligations
For Live Science, Christopher covers public health, nutrition and biology, and he has written extensively for The Washington Post and Sky & Telescope among others, as well as for the NASA Goddard Space Flight Center, where he was a senior writer
doi:10.1136/tc.2004.008953
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