is smoking 3 cigarettes a week bad Stop Timeline Smoking Myths: Experts Clear Up

They have been found to have a 36% higher risk of cardiovascular disease compared to those who only smoke conventional cigarettes

doi:10.1136/bmjopen-2016-011045 Ministry of Health

There shouldn't be any problem bringing vapes on planes, so long as the previously mentioned rules are understood

87 Specifically, the United States argued that "Article 2.1 does not establish a rigid temporal limitation in relation to the evidence that a panel may consider in performing a less favourable treatment analysis." 88 The Appellate Body agreed with the United States that nothing in Article 2.1 prohibits a panel from taking into account evidence pre-dating the establishment of a panel to the extent that such evidence informs the panel's assessment of the consistency of the measure at [the time the panel was established]