Cold

I have a horrid cold, and I feel like crap. Aren't colds just horrible? I caught this one from a guy in my office, who had the sniffles for one day, took lemsip and was fully recovered the day later. He clearly has the immune system of a Greek god. Me? Well, my immune system is buggered, so I'm snotting all over the place with teary eyes and a body temperature like a whore's knickers (frequently up and down). Just want to go to bed, but instead am at work, because I feel like such a prat calling in sick because of a common cold. Urgh. Can anyone tell me: why can't they cure a virus?