Formaldehyde. Formaldehyde is a known human carcinogen widely used in many consumer products, including building materials, pressed wood, cosmetics, shoe-care products, and textiles. Natural Resources Defense Council's formaldehyde fact sheet.ormaldehyde. Formaldehyde is a known human carcinogen widely used in many consumer products, including building materials, pressed wood, cosmetics, shoe-care products, and textiles. Natural Resources Defense Council's formaldehyde fact sheet.
This is often caused by the blockage or inflammation of the salivary gland duct. Viruses and other medical conditions can also reduce saliva production, including: 1  mumps (a contagious viral infection that is most common among children who have not been immunized). 2  HIV. salivary gland infection typically results from a bacterial infection. Staphylococcus aureus is the most common. Others include: Streptococcus viridans, Haemophilus influenzae, Streptococcus pyogenes, and Escherichia coli.
Tweet. Pharyngitis is in fact a contagious infection. It is an infection of the throat or the pharynx, and is usually caused by a bacteria or virus. Sometimes pharyngitis can also be caused by chemical or other irritants. Simply observing the throat alone cannot identify the cause of pharyngitis.ost bacterial pharyngitis is caused by the streptococcus bacteria and is quite contagious. Strep throat is caused by these bacteria. The symptoms of strep throat include: 1  Red and inflamed throats. 2  Swollen lymph glands. 3  Difficulty swallowing.