I work 6 months in a family pool store. i smell chlorine, ph, shock and such chemicals daily, while i wash hand constantly. should i fear for health?

Hopefully not: Osha, occupational safety and health administration is a federal agency that deals with issues such as yours. They have local offices and toll free numbers to call for general questions or to complain. If the store is doing everything right, you don't have as much to fear, although smells may be bothersome. If you have a personal reaction to the chemicals, then you need to do what is good for you.