Yes, avoidance of the paint smell is best however, if that is not possible, you may want to invest in a soft carbon mask. I have heard good things about the I Can Breath! Honeycomb mask with activated carbon filter which can be purchased from Needs.com. I own the organic cotton mask version which works well.
There is also paint with no or low VO. Perhaps, you can convince the facility to change paints to one that is eco-friendly that does not emit the smells. I am very sensitive to paint smells (causes throat tightening) and after much research, I had my closet painted with YOLO paint.
I can't think of anything different you can do. With MCS avoidance is crucial for not getting sick.