Universal Virus Sniffer is a powerful tool designed to facilitate the removal of unknown viruses that are not present in databases. Rebootkits and rootkits can be removed. In light of these facts, let me tell you not to make a big deal about this program replacing your full computer system.fledged antivirus. In addition, Universal Virus Sniffer is designed only for advanced users who are familiar with the Windows registry. An incorrect use of the registry or operating system can result in accidental damage.