Melissa McCarthy once felt like a poor, unfortunate soul on set.

My eyes were swelling up; I was absorbing all of this nuttiness.

There were people weeping, visibly so upset by this one person, she said.

Melissa McCarthy Once Worked on a Toxic Set That Made Her ‘Physically Ill

Don Arnold/WireImage

It was very effective.

Eventually, McCarthy had enough and learned to advocate for herself.

One day, I was like, It stops today!

Melissa McCarthy and Halle Bailey.

Melissa McCarthy and Halle Bailey.

she told the paper.

I just kept saying to them, it stops, it stops.

And I know now Ill never keep quiet again.

Melissa McCarthy and Halle Bailey.

She was telling me, Yeah, I had to learn.

I wasnt always this way, and when youre young, youre timid, said Bailey.

Comedy allows you to sit next to somebody whose ideas dont match up.

And maybe you come out a little closer, she said.

I think thats what Im supposed to be doing, in this world.

This article first appeared onVanity Fair.