Ventless fireplaces fueled by gas or propane rely on indoor air for combustion, and they exhaust a low level of their combustion gases into the room in which theyâre located. A chimney or flue isnât necessary. The risk to your health is a long-standing and ongoing debate.
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HPV is the most common type of sexually transmitted disease, or STD. It's not one, but a group of more than 200 closely related viruses. Sexually transmitted HPV comes in two different types: Low-risk HPV types cause genital warts -- bumps on the penis or vagina. High-risk HPV types cause cancers in both men and women.