Just to throw this out there, but are you seriously saying that people who smoke OUTSIDE are going to seriously harm other peoples health when they walk nearby and maybe get 1-2 seconds whiff of smoking, and are you actually comparing it to ACTUAL second-hand smoke? Second-smoke and the ill-health that is derived from it only occurs in a situation where you are inhaling a significant amount of second-hand smoke, such as in a car, or in an enclosed building, or maybe if you're standing in the middle of a group of smokers in a smoking section. You WILL NOT get sick, or contract any ill-health problems from walking near a smoker(or even through a cloud of smoke) in the great outdoors, unless you deliberately stop and start inhaling the stuff as much as you physically can until the person stops smoking. It's OUTSIDE. The air currents are pulling it every which way, diluting the chemicals in the smoke, and the completely insignificant amount that you will get will do nothing detrimental to your health.
The above comes from someone who does not smoke(anymore that is). You are deluding yourself and making a mountain out of an anthill in this situation, sorry.
Use capslock ALL YOU LIKE, this is WRONG, and this is MEDICAL REASSURANCE , erm, sorry, got caught up in the capslock frenzy, medical reassurance that you are certainly not qualified to give, and if you were a practitioner giving this advice to a patient you could easily be sued for it given all the medical literature and patients like myself that show otherwise. Second hand smoke is in fact carcinogenic, the smoke breathed in, even if diluted as I already pointed out (thanks for the pointless lecture), while not in most cases going to be a catalyst that begins mutated cell growth or even bronchitis and other respiratory ailments/infections, can easily be what inflames it into that situation, which you seem to hilariously poo poo off as "nothing detrimental to your health".
As for mountains and anthills, I was merely having a debate with someone, this issue wasn't even one brought up by me, but as someone who has suffered due to second hand smoke from smokers who were too dumb to realize the effects of their smoke, flat out didn't care, or were pretend doctors telling people they'll be perfectly fine because it's "OUTSIDE" (without capslock emphasis), the body doesn't really give a flying [censored] about any of those explanations, it reacts to the smoke. If you're one of those who had absolutely nothing happen to you (I've had an uncle smoke for damn near 40 years and doesn't yet have lung cancer, yay I guess it's perfectly healthy

), hey, awesome, but you're talking to someone who did, and there are many, so it's another horrible presumption assuming people are like you and will be supposedly unaffected as you, and this is why smoking laws had to be created, and sadly will likely be broadened further.