Guess I'm not the only one with this issue.
My allergic reaction, kinda like cold symptoms, came on slowly, becoming more uncomfortable each time I used it. Seems that repeated exposure was aggravating it. The reaction, however, only seems to happen when I use it to glue wood, not plastic or PE. Working with the kids in Science Olympiad building bridges, we were using both balsa and basswood. I did notice sometimes that a faint whisp of smoke or fume or something would come up from the freshly glued joint, so I assumed it was this that when inhaled was causing the discomfort. It didn't seem to bother any of the kids though. I did mention it to the science teacher. He asked the kids about it and none of them had any problems, as well as himself. He was rather surprised about it. I was exposed more though as I was working with 8 kids, plus doing some experimental work on the bridges at the bench at home as well.
I bought a small, 6 inch diameter fan that I now use, sitting up and about 8 feet behind me, blowing over my shoulder kinda, that takes those fumes away from my face. Just enough to move the air but not blow parts or even paper around on the bench. Seems to work well for me. Since then, when working on wood models, any time I forget to turn on the little fan, I get those same symptoms.
EJ