Since you are vulnerable to catching a cold, you must take special care to avoid contamination. To stay safe, be aware of what you touch. Additionally, remember to wash your hands often. Since bacteria are spread largely via the hands, it is important to be careful about putting your unwashed hands near your mouth. Furthermore, it is important to be mindful of those who may be ill in your vicinity. Moreover, it is advisable to avoid using a telephone that has been recently used by someone with a cold. Having knowledge of transmission, one can defend themselves greatly against infection.