Nasal rinsing, also known as nasal irrigation, is being studied for its potential to help with various health issues, including colds, congestion, and covid-related illness. The effectiveness and safety of nasal rinsing, which can be done with devices such as neti pots, are being explored in recent studies. However, there are also concerns about the safety of nasal rinsing, including the risk of infection from certain amoebas.