CONTAGIOUS

[adjective] - (of a disease) able to be caught by touching someone with the disease or a piece of infected clothingIt's a highly contagious infection, so don't let anyone else use your towel.A person who has a contagious disease can also be described as contagious.Are you contagious or is it alright to kiss you?Contagious laughter/enthusiasm encourages other people to do or feel the same.He's got a contagious laugh.