t appears many people’s anti-virus level dropped over time. Thus, do we need another booster to keep our body from infecting new variant such as Omicron? Maybe we can think about it another way. There are two ways to kill the virus: in the air and on surface. We also know how to kill virus on surface. That is, using such as alcohol or disinfectant liquid like diluted bleach. Kill virus in the air fast before it infects people will be tough, especially making sure the chemical or method is not harmful to the body. Maybe it takes longer to do so, using hydrogen peroxide sprayed in the air may be such an approach to mitigate the risk. It may not work very well but it certainly is an alternative instead of keep getting booster shot!