I interpreted the orginal message to suggest that some (probable) scumbag pretending to be a vacuum salesman (not the quotation marks in the topic title) was engaging in suspicious behavior. I did interpret any criticism or impugning of the character of actual, bona fide vacuum sales persons.
Cold calls on someone's porch in an isolated area after dark are something that makes me very suspicious too.
Cold calls on someone's porch in an isolated area after dark are something that makes me very suspicious too.