What are the health and safety practices in caring for clothes?

This is a difficult question to answer without having the specific details on the type of clothing in question, and the contaminant, if any, that would need to be removed. Most clothing can be laundered normally, even after contamination, but never assume this is the case...ALWAYS CONSULT THE MSDS. It is the only way to know for sure what precautions should be taken when working with a chemical.