I have been asking for that for about a year and a half.
A portable scanner would be great.
Dell Inspiron, Win10x64--HP Envy Win10x64--Both systems Avast Free v17.2.2287 beta, Comodo Firewall v8.2 w/D+, MalwareBytes v3.0, OpenDNS, Super Anti-Spyware, Spyware Blaster, MCShield, Unchecky, Vivaldi Browser and, various browser security tools.
"Look before you leap!" Use online scanners before you click on any link.