It's not "if". People who are hungry will look through trash and anything else in the open, and if SHTF people will be hungry. Trash is a source of resources for the prepper and for zombies, and it should be a major OPSEC concern.
I’m sort of thinking the trash pick up guys won’t be running their usual schedules, if they will be collecting trash at all.
Get baggy clothes so you look like you have been missing meals.