Depends on the type:
Water: your floor and walls get wet
Powders: Your floor is covered in it. Don’t eat a few hundred grams of it.
Foams: Your house is covered in a chronic biohazard.
Halon 1211 and 1301(CF2ClBr and CF3Br): The lower few inches of your house is filled with a mildly toxic, powerful greenhouse gas that is one of the worse compounds for the ozone layer
CO2: The local concentration increases