Worked in a boat yard 30 years back, and hot under the roof so rolled up sleeves when mixing 'microballoons'. Some of it splattered on my arm and I neglected to wash off immediately. Was about half hour later for tea break. Was a very bad thing to do as am now sensitised for life from resins and glues. Was a a few large volcano full of pus on arms and now still get bloody rash burns appearing now and then .. who knows about inside my body ..