Youre better off smoking a smaller size, like a Corona or a Robusto, if you havent got enough time for a Double Corona, for example
While nicotine products fall under strict tobacco laws, zero-nicotine vapes exist in a gray area

As a result, fat regulating receptors can be activated by very extremely small amounts of chemicals that mimic the effects of estrogen, whereas the higher levels normally used in safety tests can cause receptors to shut down all together and have no adverse effects.[28] Consequently, chemical manufacturers often have their products approved because it would take an unnaturally large dose for them to be poisonous, but the problem is that they are dangerous at the extremely low environmental level doses that we receive on a daily basis and we often dont know the adverse effects until after years of exposure.[28] How Plastics And Environmental Toxins Can Make You Fat: List Of Common Environmental Obesogens Besides DDT, the main chemical obesogens are Bisphenol A (BPA) Phthalates Perfluorooctanoic acid (PFOA) Tributyltin (TBT) Heavy metals such as cadmium, arsenic and lead Bisphenol A (BPA): From Hard Plastics To Cash Register Receipts Each year over 6 billion pounds of the estrogenic monomer bisphenol A (BPA) are used to manufacture polycarbonate plastic products

However, tobacco companies opposed the move, partly because there is no evidence that these warnings influence smokers to start, maintain or stop the smoking habit