There was a story recently about someone having blotchy face issues which got better when they were WFH during the plague but almost instantly came back when they were re-officed. Turns out (via an allergy test) they were allergic to some industrial chemical that, surprise, was one of the chemicals in the toilet air freshener and were basically being pepper-sprayed every time they went in.
[edit: https://www.walesonline.co.uk/news/wales-news/skin-irritated... ]