Disposable clothing articles for hunting and other outdoor activities are made of a low-cost, lightweight, breathable material, preferably a non-woven with particle barrier properties, and preferably include cinching elements for cinching closed with a good seal the hand and foot openings of the clothing to prevent the escape of human odors. The clothing articles are treated with one or more odor-reducing agents to absorb the human odors that pass through the clothing material. In an example method of making the clothing articles, a liquid odor-reducing agent is sprayed onto the clothing, one or two powder odor-reducing agents are sprinkled onto the inside and outside surfaces of the clothing, and the treated clothing article is stored in a sealable bag or other container.