You can’t get infectious diseases from using a hotel towel when your arm is broken and bleeding. Regular hotel towels are cleaned and sanitized, so there are no bacteria, viruses or other infectious diseases left on the towels. However, if the towel has been used by someone else and has not been cleaned and disinfected, there is a certain possibility of contracting an infectious disease. The prerequisite for infection is the presence of the previous user’s blood on the towel and the presence of infectious diseases on the towel, such as AIDS, syphilis, hepatitis B, hepatitis C, etc. They can be transmitted through blood, but the possibility of such transmission is very low. Because blood is on the towel, bacteria or viruses do not survive for too long, and their amount is very small, it is generally difficult to cause infection.