Caitlin Snow: Here's what we know about the cryo-atomizer. Tannhauser originally developed it to combat land fires caused by droughts. So the cryo-atomizer can disperse cold air particles into the atmosphere that triggers rainfall. However, if Cicada can replace the cold particles with the cure prototypes she stole from Cisco...
Cisco Ramon: Which doesn't cure so much as it kills.
Caitlin Snow: ...she could infect the entire city.
Iris West-Allen: And every meta-human in it.