With new research showing that vehicular tire wear being an even worse polluter.

Yah the thing is weed smokers know a small bit of weed smoke is nearly harmless compared to an equivalent bit of smoke from a tobacco smoker. It is absolutely still inconsiderate but as far as I know there is little evidence that second hand weed smoke inhalation is much of a threat to anyone. Vehicular exhuast is most definitely far more of a health threat

> It is absolutely still inconsiderate but as far as I know there is little evidence that second hand weed smoke inhalation is much of a threat to anyone.

There is no reason to believe that weed smoke is any better or worse than cigarette smoke. Burnt plant matter is burnt plant matter and contains lots of garbage--most of which isn't good for anybody.

The only difference nowadays is that a lot of people consume both nicotine and THC using vaping and concentrated liquid. This is probably less damaging in terms of secondhand smoke as the temperature is lower and the goal is vaporization rather than oxidation.

Only one of these combustibles contains nicotine and the resulting nitrosamines.

> There is no reason to believe that weed smoke is any better or worse than cigarette smoke.

It is impossible to say one way or another as the internet is full of both sides of opinions. It is easy to find articles that say that weed smoking isn't as bad as cigarette smoke. I personally don't trust either side though.

But, from a logical point of view, they have very different compounds in them, so there must be some sort of difference.