Can’t blame the Umbrella Corp for this one- it’s Zod’s fault, but perhaps Umbrella Corp is their supplier?

Here’s the synopsis for “Smallville”, ep entitled “Rabid” (Sn9 Ep3):

Zod (Callum Blue) and his soldiers release a virus into the air that turns humans into zombies. The only way to stop it is to make an antidote from the blood of another Kryptonian. After Lois (Erica Durance) is infected, Chloe (Allison Mack) pleads with Clark (Tom Welling) to donate his blood to stop the epidemic, even though it risks outing him to Zod. Michael Rohl directed the episode written by Jordan Hawley.

Preview and clip:

Catch “Smallville” on the CW, Fridays at 8/7 C.