Ladies – if you’ve had a cold, will using your germ-infested lipstick make you sick all over again? Dr. Mona Gohara from the Yale School of Medicine says that’s extremely unlikely. Because the cold virus isn’t terribly resilient. But other germs and viruses are a lot hardier, and COULD trigger a relapse…… Including those that cause mono, cold sores, and the flu. In that case, toss any lip products and start fresh.