I am wondering about this too. I have had a problem with my car and don't want to get in it. I find it happens when I park my car in the garage at work. Everything is fine in the morning, but by the evening, I am itching when I get home.

I moved your question to its own thread as it seems different from the others' questions in a couple of respects.

If you don't go to work in that particular car does it happen in other cars?

If you're itching when you get home, do you itch when you get to work the next day?

Does it happen regardless of the weather? Does heat or cold or dryness or humidity make any difference?