... compounds have been seen in the perfume indus-try and among aromatherapists[1,2]. However, itremains difficult to identify the chemica ls responsible ofdermatitis from the complex contents of volatile ... condu cted another organic synthesisexperiment, but had no symptoms. The latter experi-ment was conducted inside a d ifferent fume hood thatwas sufficiently distant from the case to avoid exposu ... 2,4,5-tri-bromo-3-hexylthiophene. The volumes of theseproducts were probably small. The experiment was terminated on Day 3. His skinsymptoms worsened further (Figures 1 and 2). On Day 8,a dermatologist diagnosed them...