Bright orange traffic cones aren't always the most fashionable site accessories; in lieu pairs of boots fitted with low-yield smoke generators, to warn of "danger beyond this point".-- FlyingToaster, Apr 10 2013 Can you expand the range to include the smoking labcoat?-- not_morrison_rm, Apr 11 2013 Bun.-- whlanteigne, Apr 11 2013 Smoker no smoking!
Wait, that's the wrong boots too.-- 2 fries shy of a happy meal, Apr 11 2013 I was thinking of some kind of sign, with 5 labcoats, and indicate the level of inadvisability by the number of etc No reason why this can't go heads-up via google glass or whatever.
For example 5 smoking labcoats corresponds to "striking a large pile of fulminate of mercury with a hammer", whereas 1 might only be "attempting to stroke a cat".-- not_morrison_rm, Apr 12 2013 I was thinking Ankh-Morpork public works dept.
On the other hand I've done the smoking-labcoat thing (about a 3/10 : grease + sulphuric(iirc) acid)... your idea doesn't strike me as being particularly derivative of this post...-- FlyingToaster, Apr 12 2013 Different colored smoke for different kinds of hazards.
Also could be augmented with specific odors: rotting flesh smell to warn of zombies, etc.-- whlanteigne, Apr 12 2013 random, halfbakery