It’s amazing to me that active air exchanges for filtering and even humidity are not well optimized as part of modern housing HVAC. Is it costs or simply system

It’s amazing to me that active air exchanges for filtering and even humidity are not well optimized as part of modern housing HVAC. Is it costs or simply system integrations? For instance, another big indoor pollutant is cooking fumes, from both the heat source and to cook, carmelize, burn, etc - the food and vapors of changing temperatures. The range hood required by fire codes to stove sizes is not turning on automatically with pollutant detection.