Comment by energy123
Not an easy silver bullet. They'll filter out pm2.5 but most don't touch VOCs. Most that claim to remove VOCs don't have enough volume of activated carbon to justify that. And even if you buy one of the ultra expensive machines that do filter VOCs, you're still left with rapid carbon dioxide accumulation which probably acutely harms cognition even at sub 1000 ppm levels, forcing you to open the windows which is self defeating.
You're really left with two good solutions, one is centralized airflow with appropriate HEPA filtering which many can't afford, or to move to a location with default clean air, again a difficult proposition depending on work etc.
The carbon filters are also a second more expensive consumable on top of the particulate filter.