The Flash, Season 5

Caitlin:
So the dagger has anti-dark matter properties.

Cisco:
Yes!

Caitlin:
Cisco, if we could synthesize that into a serum, we could get rid of Cicada's powers entirely.

Cisco:
And not just his powers! Everyone's!

Caitlin:
Everyone's?

Cisco:
Caitlin, we can make a metahuman cure.

Caitlin:
You think we need a metahuman cure?

Cisco:
Don't you?

Caitlin:
Um...

Cisco:
Okay, maybe not. But I seem to remember a time when you did?

Caitlin:
Sure, when I first discovered Killer Frost, I wanted to get rid of her. But when she was gone, it felt like a piece of me was missing. Besides, we've seen metahuman powers do really good things.

Cisco:
Okay, yeah, if you can build an ice bridge to avoid rush hour traffic... but what if my existence gives everyone around me radiation poisoning like Fallout? [pause] Those metas, we created them against their will.

Caitlin:
No, Thawne created the particle accelerator and he sabotaged it.

Cisco:
And who shattered the satellite full of dark matter and created God knows how many metas? We did that. This cure could give metahumans a second chance at having a normal life.

Caitlin:
Maybe not everyone wants a normal life, Cisco.