Carpet that has experienced any water damamge or has been exposed to high levels of humidity is prone to produce mold.To check your carpet for mold,lift a small section up off the floor.Mold can come in any shade of color.The texture usually is cottony, velvety, granular or leathery.
You can request your home to be tested.This could provide various testings of the air quality in your home.This can be quite expensive,I would advise this maybe as a last resort.
The best way yet to detect mold is simlpy to see and smell it.Look for areas in the home that mold may be present.Mold's favorite places happen to be bathrooms,kitchens,and basements.Check any area that may have a lot of moisture.Remember mold can be any color.Red,black,green,purple,or any other color.If you can see or smell mold,then you have mold.It is pretty simple.
Mold usually carries a musky odor.Some might describe the smell as 'musty'.