We know the coronavirus mostly enters through our nose and mouth. If we disinfect these areas, could we avoid COVID-19? Penn State researchers say the answer could be yes. In a study in the Journal of Medical Virology, they showed that anti-septic mouthwashes inactivated greater than 99.9% of a coronavirus similar to the one that causes COVID-19, after only 30 seconds. A nasal rinse of 1% solution of baby shampoo inactivated greater than 99.9% of the coronavirus after two minutes. These results do not show that mouthwashes or nasal rinses definitely prevent you from catching the virus, but they might help at least a little.