I work at a desk job as an engineer technician and I volunteer as a firefighter and medic, sometimes accepting paid medic jobs on the weekend. Most of the time, I do not know what my triggers are, but while I'm in an episode, smoke and fumes and sunlight trigger my clusters. Yes you can work, but you need protections like FMLA, and I would stay away from all types of smoke like food service, firefighting, cigarettes, any burning anything, especially during a cluster period.