When the spray foam crew started setting up to spray my building, the lead guy told me that normally they're supposed to tell people to stay out of the building while they work and for 24 hours after. He allowed me to pop in periodically, notifying me that if I start to get "fog eye" to get out ( "fog eye" is when the ultra-fine mist or fumes of the chemical reaction get in your eyes causing everything to look foggy ). The off-gassing of the product is supposed to end within a few minutes, but the urethane smell can linger, so the building should be left open to ventilate for 12-18 hours.
After the crew finished I left the three garage doors open for the next two days. I would walk in and could still smell the urethane and walk out. By the third day, after chasing a couple of birds out of the building, we were expecting a heavy rainstorm, so I closed the building up. Five days after the spray I spent a couple of hours cleaning up, removing a lot of masking shreds and staples left after the crew had just ripped everything down to pack up and get out. That night I thought my wife was burning dinner because the house looked like it was filled with smoke. Now, the longer I stay in the shop, the more my vision is foggy and the longer it takes to clear up the next day. I called the foam company to ask about the problem. They said they have never had a problem before. They sent their QC guy today to pick up samples of foam and get info of the paint I used to have them tested.
Some background : I have always been extra-sensitive to certain smells. My wife can't wear perfumes, hair spray, even hand lotions. If she used any of these and we jumped in the car to go somewhere, I would be gagging within seconds. She used to think I was exaggerating. I can smell bad fish or meat from across the room. I can pinpoint BO in a big crowd. My best friend from HS has his doctorate in analytic chemistry. He told me I have MCS ( Multiple Chemical Sensitivity ). Now I'm worried that I might not be able to use this building.