Fair. Maybe they could be in separate sections like “For your comfort” and “Critical safety instructions”. The broader idea is that people should know the gist of why they’re being told not to do a thing, and that it’s for their own good. In this case the instruction isn’t to avoid them puking so that a janitor doesn’t have to clean it up (along the same lines of “no black rubber soles on the gym floor”), but so it doesn’t put them in intensive care.