I *think* you're being serious in asking if the vape world is exempt from trade wars, so I will answer as if you are being serious.
No, there is no reason vapes will be exempt from tariffs. Tariffs will only hurt consumers in the United States because we have outsourced our entire supply chain and have very little that is now produced end-to-end in the US, meaning there is not a way for tariffs to increase domestic manufacturing without a significant price increase in basically every area. Your food, bottled water, energy, vaporizers, clothes, computers, video games, soda, jewelry, solar panels, phones, pet food, lumber, and literally everything else is going to get more expensive. I can't speak to how currently in-transit orders will be impacted. Everything moving forward is about to get a whole lot worse, though, and that I can promise you.