A Griffith University professor warns against sharing towels, toothbrushes, and razors due to infection risks. Professor Emerita Thea van de Mortel explains that harmful bacteria, viruses, and fungi can survive on bathroom surfaces for extended periods. The fungus Aspergillus remains viable for over a month on cloth and plastic. Some bacteria survive for years. One study found high-school football players who shared towels were eight times more likely to develop antibiotic-resistant Staphylococcus aureus infections. Toothbrushes can transmit blood-borne viruses like hepatitis C and herpes simplex virus type 1, which causes cold sores. Razors pose similar blood-borne virus transmission risks through cuts. People with compromised immune systems, cuts, or diabetes face higher infection risks. Van de Mortel notes the overall risk remains low but advises against making sharing a habit. (Story URL)