Mark the gas which turns lime water milky

${\mathrm{CO}}_2\text{ and }{\mathrm{SO}}_2$ turns lime water milky, as 
$\mathrm{Ca}\left(\mathrm{OH}{)}_2\right(\mathrm{aq}.)+{\mathrm{CO}}_2\to \underset{\text{ (Milky) }}{{\mathrm{CaCO}}_3\downarrow +{\mathrm{H}}_2\mathrm{O}}$
$\mathrm{Ca}(\mathrm{OH}{)}_2+{\mathrm{SO}}_2\to \underset{\text{ (Milky) }}{{\mathrm{CaSO}}_3}\downarrow +{\mathrm{H}}_2\mathrm{O}$