Mx One Antivirus
Do you usually use a USB drive? If so, you specifically welcome this antivirus designed for such devices.
USB drives are particularly dangerous because they are connected to a large number of computers and this is a good reason for their security, because they send or transmit more viruses than any other device.
When you use common antivirus, they are very hard and heavy for a small device like a USB drive or pendrive.
Mx One Antivirus is a very good choice if you want to protect your portable drive. You can select if you want to install pendrive or antivirus on your computer.
Finally, it is completely free, so it becomes a good choice.