4 hrs.
When I was 18 I got a job working in a factory operating a machine cutting fiberglass into sections.
You had to be fully covered. I had on a flannel, t-shirt under tucked into jeans, gloves, pants, workboots, goggles.
Keep in mind there were fans all around.
All day I was itching and after 4hrs it was time to go to lunch.
I went to get some water and realized I could not swallow without pain. Think of the worst sore throat you've ever had.
I pulled up my shirt sleeve and my arm looked like it was made out of glass. The damn fans blew that fiberglass all through and under my clothes. My whole body itched like hell.
I told the manager to kiss my ass, got the fuck up outta there, and went home to soak in a bath. I took off my clothes and everything from my chest up and calves down sparkled like crystal. This was the worst bath ever....sitting at home for hours gargling warm water.
..car seats all fucked up too from the ride home.