Make sure that it wasn’t your fault that the washer was kept opened or in mistake happened this, the apartment landlord can also go ahead and collect the damage to the carpet, however now as you said it still stinks because of water moisture remaining in carpet, why not take the carpet and soke it in sunrise, in daytime. So all the smell and smell will go away. Ask your apartment owner that it was mistakenly water spilled not due to intention of doing it and also there is less ventilation in apartment, by which your cloths and other stuff are getting bad smell due to wet carpet condition.

Let me know further details. Take care