Medically reviewed by Jane Kim, MD Key Takeaways Cold and flu viruses can live on surfaces for a few hours to days. Hard ...

Sneezing helps get rid of germs, irritants, and allergens from the nose. Hay fever, respiratory illnesses, and air pollutants may all cause sneezing. Sneezing is a normal function of the body and ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Meg Sorg, Purdue University (THE CONVERSATION) Advertisement Article continues below ...