In addition to leaving the doors and
windows open, I would at least add a large fan to move fresh air. When I cleaned my
Love Bug, I used a respirator that was rated for chemical use. I may be over cautous but better cautous than dead. I once
sold a motorcycle to a guy and the night that he picked it up, he used some paint stripper on it in an enclosed area without ventilation or a respirator and died from breathing the stuff. He was 30 yrs old and left a widow and 3 kids without a dad. I still feel somewhat guilty and do my best to tell people about the dangers.
Please be careful with any chemicals, including stuff that we all use daily and don't think about.