According to the 2018 Farm Bill, CBD products class as hemp and can be legally sold provided they contain less than 0.3% delta-9 THC
Mayo, Edith (1980) Introduction: Focus on Material Culture. The Journal of American Culture 3(4): 595-604
Some electronic devices are allowed on board with restricted use: Wireless handheld devices (Smart phones, cellphones, including cellphones with MP3 player or build-in camera, iPads, tablets, VRs, etc.) Personal entertainment devices (MP3, iPods, portable games, radio receivers, video cameras) Bluetooth headsets
Everyone reacts differently to CBD, so it may be more effective for some than others
While some users claim mild effects from smoking, these are likely due to placebo or pre-existing psychological states