The bloke is obviously an idiot on two bases - vaping on a bus, and not looking after his gear properly. I vape but wouldn't dream of doing it where others would object. Vaping isn't smoking, but most reasonable vapers (and smokers) understand that people don't want to sit in a fog of someone else's making. Decent equipment doesn't just explode - he's either not looked after it in some respect (batteries, etc) or has an unregulated mod that he hasn't neutralised before putting back in his pocket.
