Hiring an engineer to invent some laboratory nasal filters. They should accomplish the same thing as a respirator mask that filters out organic vapors and acid gas (found in chemistry labs). Other nasal filters already exist for other purposes (smoke, pollution), so you could borrow their designs. All that is required is a way to build in filters that would apply to chemistry and biology labs. If you complete the chem lab filters, you might get rehired to build some formaldehyde filters for biology lab.