Secondary treatments can include: walking around with your arms outstretched, removing contaminated clothing, and taking a cool shower.
In fact, it is essential to shower and wash your clothes as soon as you are able. This shit is toxic, and will continually contaminate you and everyone around you until you get rid of it. Until then, try not to touch your eyes or your face, or other people, furniture, carpets etc. to avoid further contamination. Shower using the coldest water you can stand (to keep your pores from opening). Wash your clothes using strong detergents.