is an ionic compound because sodium element is a metal and flourine element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.
The nomenclature of ionic compounds is given by:
1. Positive is written first.
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
Usually, the procedures you should follow is using hand sanitizer or just washing your hands. That can help remove some microbes, but it is inevitable to not get any germs on you