There are plenty of wood stoves available these days with what are effectively catalytic converters. Wood stove particulate emission can be a lot lower than it used to.
And in fact it's the law in many places (Canada)
And switching from coal to number 2 heating oil also improves air quality -- drastically.
Next we have natural gas, which doesn’t emit anything with an impact on your health (and is also somewhat better, although far from perfect, in its impact on climate).