"Nobody knows better than me what is better for myself and mine."
It's not always true (see vaccination or smoking) but the alternative is much worse and in much more cases.
Smokers and anti-vaccination also use the same argument. Even though their actions are also dangerous to other people(kids). I am sure they felt oppressed when public smoking was banned. Smokers will tell you that smoking isn’t different to dangerous sports or unsafe sex. Yet, dangerous sports/unsafe sex isn’t banned.
Please address their point about antivaxxers.
And if someone does have a hermetically sealed room no smoke will escape from, I suppose that is OK, so shouldn't be illegal except forcing someone to do against their will.