This is accomplished in new builds with intentional ventilation. My above-garage ADU accomplishes this with a schedule on the bathroom fan and a make-up air intake in the utility closet. A more expensive (and more efficient) route would be to install an HRV or ERV.
As an energy consultant friend explained to me: You want to control the ventilation rate, rather than relying on whatever you get accidentally (which may not be enough, especially on calm days).
As an energy consultant friend explained to me: You want to control the ventilation rate, rather than relying on whatever you get accidentally (which may not be enough, especially on calm days).