How do you tactfully say that someone smells? I'm pregnant and feel an…

How do you tactfully say that someone smells? I'm pregnant and feel any odors. The person smells like sweat, feet, and from their mouth. I can't anymore, they've been here for a week. I'm disgusted, and even worse, my slippers she wears. At the beginning, I still gave food to the child with a spoon politely asked not to do so because cavities are transmitted. On the rest, I feel patience will burst. Help