It always makes me laugh hearing smokers talk about 'their right to smoke'. I, as a non-smoker, have the right to not inhale, not only noxious, but unpleasant smelling fumes, and that includes if there is adequate ventilation or not. I also have the right not to pay for all of the medical harm that your smoking causes, either through higher medical insurance premiums or higher taxes, or both, depending on how it is funded where you are from. The same right applies to you wearing a seatbelt in a car or a helmet on a bike (push or motor).

I agree that some of the laws in some parts have gone too far. In NZ for example, you are not allowed to smoke in any workplace. A workplace can be defined as your own vehicle, even if you are in it by yourself, if it is being used for work purposes. That said, I do support laws that protect the rights of the majority from the rights of those who are deliberately harming themselves and potentially harming others.