Which is NOT a way to spread infection?

Touching a non-infected area is not a method of spreading infection because infection typically requires the transmission of pathogens from an infected individual or contaminated surface to a susceptible host. The other options involve direct opportunities for pathogen transmission: direct contact with bodily fluids can easily transfer viruses and bacteria; improper handling of contaminated materials can lead to the inadvertent spread of pathogens; and sharing personal grooming items can allow for the transfer of microbes from one person to another, especially when the items have been in contact with infected areas or fluids. Thus, touching a non-infected area does not present a risk of spreading infection in the same way as the other listed options.