my boyfriend's sister is visiting and some sores have appeared around her mouth, she calls it herpes cold sores. She uses abreva to make them go away. She says it's a virus and contagious. She is always touching the sores and I rarely see her wash her hands, especially before she eats or puts her hands in the cereal box or yesterdays taco salad lettuce. I am very nervous/anxious about this and want to know how this type of herpes can be transfered from person to person. In the last two days, I have been avoiding anything she touches and carrying around a can of spray antiseptic. I don't eat because she touched it. I can't keep doing this and am completely paranoid. Please help ease my mind.