You need to take proper precautions not to infect others. Always close your nose and mouth with tissue paper or handkerchiefs while sneezing. Avoid touching your mouth, nose, and eyes as much as possible as germs can enter your body through these ways. Flu makes your body weak. It is always better to take proper rest and have nutrient-rich food to gain strength. Staying hydrated is equally important. Lastly, consult your doctor and take the necessary medicines.