Why Does One Room In My House Smell Musty?

Why Does One Room In My House Smell Musty? If your room smells musty, it could be caused by something called microbial volatile organic compounds (mVOCs). The Environmental Protection Agency says, “because mVOCs often have strong or unpleasant odors, they can be the source of the “moldy odor” or musty smell frequently associated with mold