Actually, Cutecurlz, I've been in various working environments, and only very, very dusty has been one. The worst one had to be working at the airport where the CO2 levels were pretty high. My CF doc at the time took a large needle to take a sample of blood, and told me on my next visit I had a large content of CO2 in my blood. I figured it had to be due to working at the Rent-a-car company, because Airplanes don't make such high CO2 emissions!
However, I'm probably still glutton for punishment, because the next hardest job happens to be running on business trips.
However, worse than that is working an average of 80 hours a month, and only getting paid for 20 of those hours, yet being all "BANZAI" for the company, till they can ya!