If I put mbam installer and an infected PC runs it, will my flash drive also become infected? Can I just remove it with malwarebytes on my clean computer?
Depends on the virus, if it contains the code to transfer itself to removable media then yes, your thumb drive will become infected, if it does not then your safe.
Flip a coin
Although you can just reformat the thumb drive after using it to transfer malwarebytes.
Safe mode with networking will usually let you download mbam directly, but I've never had a flash drive transfer an infection when I had to go that route. Possible but unlikely.
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