It's called "Whiner-vapor" and it's use is intended as a sort of disinfectant to keep noisy, weak strains of mammal from setting up permanent residence.
Sometimes kids have a slight noticeable reaction to it's effects, but have figured out on their own that the antidote is available at the snack bar..... a big doughy pretzel and a Powerade.
I take a deep breath as soon as I hit the door to allow my respiratory system to adjust quickly and focus on what is important.... playing softball in the winter.