ΔE 21.3, loose: different enough that you should pick on purpose. Viridian Green Hue is noticeably darker, more muted, warmer than Hazardous Smog.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Viridian Green Hue is noticeably darker, more muted, warmer than Hazardous Smog.
The same difference applies the other way round: Hazardous Smog is noticeably lighter, more saturated, cooler.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Hazardous Smog on the colour wheel See Viridian Green Hue on the colour wheel
All matches: Hazardous Smog equivalents · Viridian Green Hue equivalents