He’s got the dirtiest job in the city — and it’s never been more important.

Subway car cleaner Corey Skinner spends 16 hours a day, five days a week sanitizing train cars to keep the essential workers who ride them each day safe.

“I got a job to do, and I want to help as much as I can. We rally the troops and we get out and we fight the best that we can,” said Skinner, 49, a 13-year MTA veteran with a wife and kids at home.

“We’re first responders, and we’re ready.”

While the COVID-19 virus has mostly spared Skinner’s close circle, his agency hasn’t been so lucky: As of Wednesday morning, over 40 transit workers had died from the virus. Thousands more have tested positive or self-quarantined due to possible exposure.

But Skinner said he won’t let fear stop him from doing “the right thing.”

“I’m human, of course I get scared,” Skinner said. “It can weigh on you, but I’m always motivated by trying to do the right thing and do my part.”

The MTA has been cleaning trains and buses every 72 hours since early March. Skinner works out of the aptly-named Corona train barn in Queens, which serves the Flushing-bound 7 line.

“We’re doing a lot right now,” he said. “We use bleach and water and some lemon disinfectant and wipe down all corners of the train including the board the train operator uses. We do the vents. We do the windows. Anything that’s inside the train we try to sanitize.”

A subway commuter himself, Skinner strips down completely the moment he gets to work and bags his street clothes. He said he and his colleagues “get suited and booted” before they clean trains — in white Pyrex suits, goggles, and blue cleaning gloves.

Work hours have doubled since the start of the outbreak. His shift starts at 10 p.m. and he doesn’t leave until 2 p.m. the next day. A single train car takes 15 to 20 minutes “on a good day,” and that’s before you factor in what Skinner calls “the elements.”

“I expect the unexpected,” he said, referring to the assortment of detritus he might find on subway cars. “I’ve been doing this a month now. It doesn’t seem like it’s going to stop no time soon, but we’re ready.”

It’s Skinner’s sense of responsibility to the city — and his own loved ones — that keeps him coming in day after day.

“I’m invested because I ride the train also [and so do] my kids, my wife, my family and friends,” he said. “Something compels me to try to help other people out, bigger than me. Bigger than all of us.”

Additional reporting by Gabrielle Fonrouge

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