Definitely interesting. I have minor allergy to the sanding dust of a couple of domestic woods, and this is easy to protect against. However I was recently surprised to discover a considerable rash on my left forearm. I had just completed constructing and turning three large segmented walnut salad bowls, and realized that I had repeatedly brushed walnut chips/shavings off my left forearm with my right hand. The rash took ten days to two weeks to finally disappear. Not fond of wearing long sleeves while turning, but I think a gentle shot of low pressure compressed air (instead of mechanical brushing) will solve the problem.
Since allergies are said to worsen over time, using increased protection at the early signs of allergy would seem to be a good idea, even when the initial allergy is not particularly severe.