Stop and think about it...if someone exposed your family/kids to nicotine clouds (assuming there is nicotine in their juice), would you be concerned? Personally, it would offend me and I'd have a real problem with that. Although I'm a former smoker and currently a daily vaper, vaping inside a mall is [frankly] inconsiderate and just asking for trouble.
By this logic, vaping outside is inconsiderate and just asking for trouble.