I have been asking for that for about a year and a half.
A portable scanner would be great.
Dell Inspiron, Win10x64, MalwareBytes Premium--HP Envy Win10x64, MalwareBytes Premium,--Both systems Avast Free v2016.11.1.2234 beta, Comodo Firewall v8.2 w/D+, MalwareBytes Anti-Exploit Free, Super Anti-Spyware, Spyware Blaster, MCShield, Unchecky, Firefox (latest build) and, various browser security tools.
"Look before you leap!" Use online scanners before you click on any link.