Healthcare Ayurveda quiet yet powerful armed forces against COVID-19 Updated : April 27, 2020 01:45 PM IST Ayurveda also offers guidelines for food during epidemics, stressing that we should keep our guts clean. Decoctions at sunrise and sunset are a ritual for cleaning the nasal passages by stimulating the bitter taste buds, which turns on the airway's immune machinery. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.