The vapes that have a chance of exploding are usually mechanical tube mods with a bunch of serially stacked low-power batteries that are then used with bigass low-ohm atomizers, causing battery failure and gassing out, which then leads to pressure buildup and explosion if there are no vents or intended breaking points on the underside. So vapes with explosion hazard basically look like pipe bombs (and in case of an explosion, also work like a pipe bomb), not like some huge, dorky-ass box.

Sorry for the nitpick, just felt like nerding out about vapes. Also not saying "don't get a mech mod", i use one myself and love it, just please don't use them with the wrong batteries and subohm tanks.