Chemicals rarely cause true allergies.
Dr. James Thompson wrote about the difference between allergens and irritants in his blog. Allergic reactions are typically
triggered by organic substances -- pollen, food, mold spores, dust
mites, animal and cockroach dander and feathers, for example. Allergens can cause
white blood cells to make IgE antibody. That is what makes them
allergic trigger factors.
Synthetic chemicals, generally, do not stimulate IgE antibody
production. Thus, they are not allergens, but irritants. Irritants also include smoke,
odors, fumes and other chemicals. They irritate the inner surface of the
nose, eyes, throat, or lung.
There are a
few chemicals involved with plastics and paints that may cause allergic
sensitivity (TDI and TMA, specifically).
The chemicals and dyes you are exposed to at work may very well be causing your symptoms -- but they may not be allergic reactions.
If you don't wear safety goggless or a mask, you may want to try them to see if that helps your symptoms. Most importantly, tell your doctor just what you're exposed to and the symptoms you experience.