There’s some dumb stuff in this interview with author Jack Gilbert (who wrote, Dirt is Good: The Advantage of Germs for Your Child’s Developing Immune System) about eating dirt and the hygiene hypothesis.
Unless you dropped it in an area where you think they could be a high risk of extremely dangerous pathogens, which in every modern American home is virtually impossible, then there’s no risk to your child.
As long as they’re properly vaccinated, there’s no threat, and they will actually get a stronger, more beneficial exposure.
There’s always a threat. There’s no zero risk. There’s a pretty good chance that foodborne pathogens, that sometimes kill folks, are in every kitchen.