n95's will protect you if in regular close contact with the bug (or someone infected)
Keep in mind that you will want to practice "contact precautions" which means also wearing exam gloves, an isolation gown, along with your respirator mask.
For general contact, day to day woalking about, an n95 will keep the particles carrying the bug out of your respiratory system.
That said, wash your hands every time you touch commonly handled items (like door handles, railings, elevator buttons, light switches, etc)
If you practice proper precautions, with the appropraite PPE, and maintain excellent infection control hygiene, you will maximize your ability to remain healthy.
When in doubt, call the local hospital in your area and ask to speak with the infection control practitioner...they will give you the straight info on what works and what doesnt.