Some health challenges can be fought with the simple act of handwashing and COVID-19 has shown that. Handwashing remains our most effective bulwark against a plethora of diseases. In this session of the NDTV-Dettol Banega Swasth India's Swasth Bharat, Sampann Bharat telethon, we discuss the importance of hygiene, how COVID-19 pandemic changed people's behaviour and also talk about vector-borne diseases.