Can germs be blown off food?

I think you're referring to dust and dirt. (which might be able to be blown off) Germs don't survive that long. Bacteria could be what you're looking for. Virus survive within a host itself, outside that it's as good as dead. read more

About half of all bacteria have the ability to move (motile) and the vast majority of those are adapted to move in liquids not on dry surfaces. Even in liquids bacteria move relatively slowly, a salmonella bacterium would take about a minute to move 1mm. read more

Possibly. It really depends but you can't just blow germs off. read more