In fact a 2018 study revealed that breathing the polluted air of Paris for a year is the equivalent of smoking 183 cigarettes . Although as vaping becomes more popular you're also quite likely to notice the revolting sickly sweet smell of certain vape liquids. However the enclosed space of the Metro, particularly in the evening rush hour at the height of summer, does provide a few choice whiffs. READ ALSO The strange rules of the Paris Metro that you need to know8. SewageSorry to end on a downer, but unfortunately the sudden waft of sewage smell from an underground drain is a regular occurrence in Paris, particularly when it rains.

Source: The Local October 17, 2019 11:03 UTC