a person who is clearly ill and doesn't have enough sense or concern for those around them to stay home from work and out of the general public. Also applys to someone who injures them-self and instead of cleaning the wound and covering it walks around with blood dripping as if it is a badge of honor. No one wants to come in contact with your bodily fluids!!!
Man, you are a frickin' biohazard! Go home before you get us all sick!
by #1 germaphobe March 19, 2009
A slutty female who has a lot of sex with a lot of different men without the use of a condom. She is presumed to have a lot of STD's. She uses her body as a biological weapon by spreading diseases through sexual intercourse.
Dang that girl is a biohazard! Don't sleep with her or you might catch chlamydia.
by Bubblz April 03, 2014