Can you vape in Thailand, and what happens if you arrive carrying one?

This one has a clear answer rather than a debatable one: e-cigarettes and vaping equipment are illegal to import, sell or possess in Thailand, and foreign governments warn their citizens about fines and detention. That is not a rumour and it is not out of date. Our sourced write-up is here: https://meetlocale.com/guides/is-thailand-safe-to-travel-alone What no official page describes is how this plays out at the border, which varies enormously by report. Have you been asked about vapes on arrival, and what did staff actually do?