Our family business is a private school bus company. Last year, a parent called and wanted certainty that the bus would be cleaned entirely (disinfected is probably what she meant...2x a day, 5 days a week) before her daughter was picked up so that there was no chance that her child, with a peanut allergy, would be exposed to any potential allergic triggers.
If it is that big of an issue, either drive your tax deduction to school yourself or do home-schooling...am I wrong?