We do not use any sort of hazardous material in our workplace, there are no SDS sheets because we don't have any products that would require them.
Fernando there are always products within your workplace that are used that you can find SDS for (with the help of internet). Remember most retail products from WD-40 to floor wax have SDS available, you merely have to "google" their name. Be creative and look beyond the obvious, by example if the windows are cleaned you should find out what cleaning fluid is used. I'm sure you can post something creative! it is amazing what we can be exposed to and not even realize it.
Cheers
Your Instructor