You may have to remove the carpet pad as well. If it was contaminated, it will have to be replaced, as it cant be cleaned. Just cut a replacement piece to fit, clean both sides of carpet, let dry, and re tuck the carpet.
Have the carpet professionally cleaned
How did you get prawn smell into the carpet to begin with?
Kerosene smell car carpet
You can either remove your carpet and add a new one, or wash the carpet
You can get rid of old bloody chicken liver smell, spilled on your carpet, by scrubbing the carpet with hot soapy water. After the carpet has dried apply fabric softener.
You can get rid of the cat smell by cleaning carpet and then using a carpet powder to help the smell in the future.
That musty smell could be coming from mold in the carpet and or it's padding, as basements tend to be damp. You could have the carpet cleaned professionally or clean it yourself with a good carpet cleaner. If this is unsuccessful it may be necessary to replace the carpet padding or both the carpet and it's padding.
you smell
try baking soda
Air freshener and carpet cleaner. Use vinegar solution and ventilate the room.
The dogs chew up the carpet and are asked if it was delicious or not.
Get the smell out of the carpet or area. The dog returns because of the smell.