Lungs
Lungs workers were responsible for fanning the fire in alchemist shops. Employed from the 14th to 16th century, their name was a bit ironic since they often ended up with blackened lungs because of their work. Eventually, better practices were put in place to eliminate this job. Lungs had to work around a lot of toxic chemicals, many of which had not been fully studied to determine the long-term effects they would have on the people handling them.
