I have a tendency to think for me when I worked with fabric, it was after the holiday fabric came in. It didn't "feel" right but not long after I developed an inflamed rash all over my face that was beyond itchy and kind of burned. Couldn't wear makeup or anything. Didn't have insurance but was able to find a kind dermatologist who prescribed the meds that helped. Ended up being off for three weeks while it got under control and cleared up.
That was my first and only holiday season there and never had any problems again.
I've always been a fabric washer regardless but mine is motivated by bleeding color dyes than anything else.