How to stop mould after water damage to your carpet? The first step will be to extract any excess water from the carpet with a wet vac. Do not use a household vacuum cleaner for this step. Your next step will be to get a live enzyme cleaner, which you can pick up from most local retailers, saturate the area and extract with a wet vac. Once again, the last and most important step will be to air dry the area.
You can do this with your ceiling fan or any floor fan. Again, this is the most important step in this process. If this does not work, contact your local professional carpet cleaner.